2006 GMC Sierra 1500 Trims

Denali
Crew Cab AWD 5.8 ft. SB
Avg. Price: $18,334

Available only in all-wheel drive, the 2006 GMC Sierra 1500 Denali Crew Cab AWD packs plenty of power, performance, and utility into a family-friendly pickup. It comes with a center differential, 17-inch alloy wheels with all-season tires, and 8.7 inches of ground clearance, but the Denali lacks low-range gearing for off-roading ability. 20-inch wheels and a heavy-duty suspension are available. A 6.0-liter, 345-hp V8 is paired with a 4-speed automatic and gets 380 ft-lbs of torque at 4,000 RPM. Towing power reaches 8,100 pounds with the optional trailer hitch. Tow hooks are standard.

A full-size interior seats five in two rows, with a split-folding rear bench and optional sliding rear window. The pickup bed is 5.8 feet long. Dual front airbags, 4-wheel disc and ABS brakes with electronic brakeforce distribution, automatic headlights, foglights, auto-dimming mirrors, mirrors with turn signals, and a tire monitor are all standard. However, the 2009 Sierra 1500 Denali receives only three and four stars in frontal impact tests.

Well stocked, this half-ton pickup offers full power features, power front seats with driver's memory, wheel-mounted cruise and audio controls, remote entry, leather upholstery and trim, heated front seats and mirrors, a security system, intermittent wipers, a trip computer, and a compass and temperature readout. The CD changer and satellite radio come with rear audio controls and headphone jacks. The Denali also offers front and rear climate control. The few options left include a DVD player, sunroof, and OnStar.

SL1
Extended Cab 4WD 6.5 ft. SB
2 national listings
Avg. Price: $14,546

The part-time on-demand 4WD system adds some rugged performance capability to the 2006 GMC Sierra 1500 SL1 Extended Cab 4WD SB. Low-range gearing lets you take it off-road, and skid plates can be added for extra protection, since the pickup comes with 8.4 inches of ground clearance. Standard power for this pickup comes from a 285-hp, 4.8-liter V8 with 295 ft-lbs of torque at 4,000 RPM. You can substitute a 4.3-liter V6 or a 5.3-liter V8 with flex fuel option. All engines are paired with a 4-speed automatic or 5-speed manual.

The Extended Cab seats up to six in two rows, with a spacious 41 inches of legroom up front, but only 33.7 in the back. Front bucket seats can replace the front split-folding bench. The cargo bed is 6.5 feet long and comes with tow hooks. The optional trailer hitch enables towing up to 8,700 pounds. Tilt and power steering, cruise control, a CD player, intermittent wipers, vinyl seats, a front power outlet, and a tachometer are all standard.

On the safety front, you get automatic locking hubs, a front stabilizer bar, 4-wheel ABS brakes with electronic brakeforce distribution, 17-inch wheels with all-season tires, and dual front airbags. Daytime running lights and automatic headlights are also standard. Traction control is not offered on 4WD models, but you can add a locking rear differential. Other options include power windows, locks, and extendable mirrors as well as remote entry and a sliding rear window.

Extended Cab 4WD 8 ft. LB

The 2006 GMC Sierra 1500 SL1 Extended Cab 4WD LB features four doors (though the rear doors are smaller, reverse-hinged, and don't open independently from the front doors), two rows of seats, and an 8-foot cargo bed, thanks to almost 20 more inches in overall length than Regular Cab trims. Tow hooks are standard, with the option to add a trailer hitch. This trim also adds part-time four-wheel drive with automatic locking hubs and low-range gearing for off-road performance. A locking rear differential is optional. The pickup rides on a front independent and solid live axle rear suspension, with 17-inch wheels and all-season tires, and 8.4 inches of ground clearance. Skid plates are available.

Powering this pickup is a 285-hp, 4.8-liter V8 with 295 ft-lbs of torque. A 4-speed automatic or 5-speed manual are the transmission options. A 295-hp, 5.3-liter V8 and a 195-hp, 4.3-liter V6 are also available. Fuel economy averages in the mid- to high teens, and towing capacity tops out at 8,500 pounds.

The 2006 Sierra 1500 SL1 Extended gets three and four stars in frontal impact tests. It comes standard with dual front airbags, front disc and rear drum brakes, 4-wheel ABS, and automatic headlights. Side curtain bags and traction control are not options. A chrome grille and bumpers dress up the exterior. Inside, drivers are treated to tilt and power steering, a CD player, cruise control, a front power outlet, intermittent wipers, and a tachometer. Rear passengers get seatback pockets and a cramped 33.7 inches of legroom. A sliding rear window that leads to the bed is optional. Other add-ons include full power features, remote entry, privacy glass, cloth seats, and extendable side mirrors.

Extended Cab 6.5 ft. SB
Avg. Price: $10,576

Adding 25 inches to both the length and the wheelbase of the 2006 GMC Sierra 1500 SL1 Extended Cab 4WD SB boosts passenger capacity to six in two rows of bench seats. The rear-wheel-drive pickup has four doors, though the rear reverse-hinged ones are not full-size and don't open independently of the front doors. Legroom in the second row is a mere 33.7 inches. The added length also requires the more powerful 4.8-liter, 285-hp V8, which gets 295 ft-lbs of torque at 4,000 RPM. It can be mated with a 4-speed automatic or 5-speed manual. Towing capacity maxes at 7,900 pounds, and fuel economy averages 16/20 mpg. Other engine choices include a 5.3-liter V8 and a 4.3-liter V6.

Riding on a front independent and solid live axle rear suspension, the 2006 Sierra 1500 SL1 Extended Cab comes equipped with cloth seats (instead of the vinyl found in Regular Cabs), cruise control, a CD player, intermittent wipers, a tachometer, tilt and power steering, and a front power outlet. It adds storage pockets in the front seatbacks. Bucket front seats are optional, along with full power features, extendable mirrors, and remote entry. An optional sliding rear window opens onto the 6.5-foot cargo bed, which comes with tow hooks. A trailer hitch can be added. Front disc and rear drum brakes come with 4-wheel ABS and electronic brakeforce distribution. Dual front airbags are standard, along with 17-inch wheels and automatic headlights. Available traction control adds more road grip. Other options include a locking rear differential and skid plates.

Extended Cab 8 ft. LB
1 national listing
Avg. Price: $15,659

To make room for the longer 8-foot cargo bed, the 2006 GMC Sierra 1500 SL1 Extended Cab LB adds 19 inches to its length and 14 to its wheelbase. The cargo bed comes with tow hooks, and a sliding rear window can be added. Two bench seats hold six people, though rear legroom is cramped. The second row is accessed only through half-doors that open toward the rear in conjunction with the front doors. Rear quarter windows open manually.

Under the hood of this rear-wheel-drive pickup rests a 4.8-liter V8 that gets 285 hp and 295 ft-lbs of torque. It can be replaced with either a 4.3-liter, 195-hp V6 (for a bit better gas mileage) or a 5.3-liter, 295-hp V8 in regular or flex fuel form. All are paired with either a 4-speed manual or 5-speed manual transmission.

Four-wheel ABS brakes, a front stabilizer bar, 17-inch wheels with all-season tires, dual front airbags, and automatic headlights are all standard safety features, but the Sierra earns only three and four stars in crash tests. Traction control is optional, along with skid plates and a rear locking differential. Side airbags are not offered. Cruise control, intermittent wipers, a CD player, tachometer, front power outlet, front console storage, cloth seats, and tilt and power steering are standard creature comforts, with the option to add power windows, locks, and extendable mirrors, remote entry, bucket front seats, and privacy glass.

Regular Cab 4WD 6.5 ft. SB
Avg. Price: $15,868

Riding on a front independent and solid live axle rear suspension, the 2006 GMC Sierra 1500 SL1 Regular Cab 4WD features part-time four-wheel-drive power with automatic locking hubs, but only 8.4 inches of ground clearance. Skid plates and a locking rear differential cost extra. Under the hood sits a 4.8-liter, 285-hp V8 that puts out 295 ft-lbs of torque at 4,000 RPM. It comes standard with a 4-speed automatic, but a 5-speed manual is available. A 5.3-liter V8 is also available as a regular engine or a flex fuel E85 version. Fuel economy averages 15/19 mpg, and towing capacity tops out at 9,100 pounds.

The Regular Cab seats three in a front-row bench, and this particular trim comes with a 6.5-foot pickup bed with standard tow hooks and an optional trailer hitch. Power windows, locks, and mirrors are optional, but the 2006 Sierra 1500 SL1 does offer tilt and power steering, cruise control, a CD player, intermittent wipers, a tachometer, and a front power outlet. It earns only three and four stars in crash tests, due to a lack of side curtain airbags. Unlike the rear-wheel-drive trims, traction control is not optional. Dual front airbags, a front stabilizer bar, front-wheel disc and 4-wheel ABS brakes with electronic brakeforce distribution, automatic headlights, and 17-inch steel wheels with all-season tires are standard. The SL1 comes with several options, including remote entry, a sliding rear window, front bucket seats, and extendable side mirrors.

Regular Cab 4WD 8 ft. LB
Avg. Price: $15,806

The two-door 2006 GMC Sierra 1500 SL1 Regular Cab 4WD LB offers a long 8-foot pickup bed for more cargo space. The part-time 4WD features automatic locking hubs and can be equipped with a locking rear differential. Skid plates and 8.4 inches of ground clearance help with off-road power, as does the standard 285-hp, 4.8-liter V8 with 295 ft-lbs of torque. Available transmissions include a 4-speed automatic and 5-speed manual. An optional trailer hitch allows you to tow up to 8,900 pounds. More power is available in the 5.3-liter V8 engine, which is also offered in a flex fuel version.

The 2006 GMC Sierra 1500 SL1 Regular Cab 4WD LB seats three in one row, with 41 inches of front legroom. Bucket front seats can replace the standard bench. Minimally equipped, the pickup features a CD player, cruise control, intermittent wipers, a tachometer, vinyl seats, front cupholders, and a front power outlet. Power accessories cost more, as do remote entry, extendable mirrors, and a sliding rear window. The Sierra 1500 earns only three and four stars in frontal impact tests. It comes equipped with four-wheel ABS, front disc and rear drum brakes, dual front airbags, a front stabilizer bar, and 17-inch wheels with all-season tires. Daytime running lights and automatic headlights are also standard.

Regular Cab 6.5 ft. SB
Avg. Price: $12,915

The rear-wheel-drive, two-door 2006 GMC Sierra 1500 SL1 Regular Cab 4WD SB seats three people in one front-row bench, with a cargo bed 6.5 feet long. Tow hooks are standard, and an optional trailer hitch can tow up to 8,400 pounds with the 4.3-liter, 195-hp V6 engine. This engine is paired with either a 4-speed automatic or 5-speed manual transmission and serves up 260 ft-lbs of torque at a low 2,800 RPM. An available flex fuel 5.3-liter V8 adds more power. Front disc and rear drum brakes are supplemented by standard 4-wheel ABS brakes with electronic brakeforce distribution. Other safety features include dual front airbags, 17-inch wheels with all-season tires, and automatic headlights. Traction control and a rear locking differential are options.

The pickup has 8.4 inches of ground clearance and can be outfitted with optional skid plates. Built for utility rather than comfort, it still offers standard cruise control, a CD player, a tachometer, intermittent wipers, a front power outlet, and vinyl seats. Power locks, windows, and mirrors and remote entry cost extra, as do cloth upholstery, front bucket seats, a sliding rear window, and extendable mirrors.

Regular Cab 8 ft. LB
Avg. Price: $13,389

If you need lots of cargo space, the 2006 GMC Sierra 1500 SL1 Regular Cab 4WD LB features an 8-foot cargo bed, about 1.5 feet longer than the standard bed. The Regular Cab features two doors opening onto a front-row bench that seats three, though optional bucket seats are available. This rear-wheel-drive pickup gets its power from a 195-hp, 4.3-liter V6 that gets 260 ft-lbs of torque at 2,800 RPM. A 5.3-liter V8, in regular or flex fuel form, is optional. Both engines comes standard with a 4-speed automatic, with the option to add a 5-speed manual transmission. Standard wheels are 17 inches, holding all-season tires.

With a dismal four and three stars in crash tests, the 2006 Sierra 1500 SL1 Regular Cab LB lacks standard side curtain airbags and stability control, even as options. Dual front airbags, 4-wheel ABS brakes with electronic brakeforce distribution, and a front stabilizer bar are standard, along with automatic headlights and daytime running lights. Traction control, skid plates, and a locking rear differential can be added. Comfort features include a CD player, cruise control, intermittent wipers, a front power outlet, tilt and power steering, and a tachometer. Options add power windows, locks, and mirrors, a sliding rear window, extendable mirrors for easier rearview vision, and remote entry. If vinyl is too sticky in the summer, cloth seats are also available.

SL2
Crew Cab 4WD 5.8 ft. SB
Avg. Price: $16,637

The on-demand 4WD system in the 2006 GMC Sierra 1500 SL2 Crew Cab 4WD is an Autotrac setup, which automatically distributes torque where needed. It features high- and low-range gear settings for off-road performance and comes with automatic locking hubs, 8.4 inches of ground clearance, and off-road tires on its 17-inch wheels. Skid plates cost extra. Power comes from a 285-hp 4.8-liter V6 that offers 295 ft-lbs of torque at 4,000 RPM, matched to a 4-speed automatic. Towing capacity is 6,400 pounds. A 5.3-liter V8 or a 4.3-liter V6 is also available, with a 5-speed manual transmission.

The SL2 Crew Cab seats six in two full-size rows which both split-fold. Forty inches of front and rear legroom are passenger-friendly, though the cargo bed is only 5.8 feet long. It comes with tow hooks and an optional trailer hitch. Upgraded cloth seats, full power features, and remote entry distinguish it from the SL1. Other standard equipment includes cruise control, a CD player, tilt and power steering, a tachometer, and intermittent wipers. Satellite radio is optional. Chrome bumpers and a chrome grille boost the star power of the Sierra.

Safety features are few, and the Sierra ranks only average in crash tests. Dual front airbags with passenger deactivation, 4-wheel ABS with electronic brakeforce distribution, a front stabilizer bar, and automatic headlights are about it. Traction control and side curtain airbags are not offered. The pickup employs a short and long arm front independent and solid live axle rear suspension.

Crew Cab 4WD w/Sport Package 5.8 ft. SB

The 20-inch alloy wheels with off-road tires that come with the Sport Package add extra durability and off-road performance to the Autotrac 4WD system in the 2006 GMC Sierra 1500 SL2 Crew Cab 4WD with Sport Package. The on-demand system comes with high- and low-range gearing. Also helping out are automatic locking hubs, 8.4 inches of ground clearance, and a 285-hp, 4.8-liter V8 with 295 ft-lbs of torque. This is paired with a 4-speed automatic, though a 5-speed manual is available. A flex fuel 5.3-liter V8 is optional, along with a 4.3-liter V6, though this engine leaves the four-door pickup underpowered. A locking rear differential and skid plates can be added.

The full-size Crew Cab is a four-door pickup with a 5.8-foot bed. This shorter bed length is due to the longer cab, which features 40 inches of front and rear legroom and two rows of split-folding seats for six passengers. A folding rear armrest is an addition to the SL2, and an optional sliding rear window can be added. The cargo bed comes with tow hooks. Full power features include remote entry and heated mirrors. Rounding out the package are cruise control, a CD player, intermittent wipers, tilt and power steering, and a front power outlet. Satellite radio is an added option for the SL2.

Three and four-star safety ratings don't bode well, and the pickup comes with only dual front airbags. Front disc and rear drum brakes, 4-wheel ABS, a front stabilizer bar, and automatic headlights complete the safety profile.

Crew Cab 5.8 ft. SB
Avg. Price: $12,972

The SL2 trim line for the 2006 GMC Sierra 1500 comes only in a four-door Crew Cab setup. This features four regular-size doors opening onto two rows of seats. Rear legroom increases to 39 inches instead of the 33 in the Extended models. The Crew Cab has the same wheelbase and overall length as the Extended, which means the extra interior room crops off some inches on the pickup bed, which is only 5.8 feet long. This half-ton, rear-wheel-drive pickup comes standard with a 285-hp, 4.8-liter V8 and 4-speed automatic. A 5-speed manual is optional, along with a 5.3-liter, 295-hp V8.

The 2006 GMC Sierra 1500 SL2 Crew Cab rides on 17-inch wheels with all-season tires and features 4-wheel ABS brakes, front disc and rear drum brakes, dual front airbags with passenger deactivation, and automatic headlights. A locking rear differential, traction control, and skid plates can be added. The pickup earns three and four stars in crash tests. The SL2 ups the ante of the SL1 with standard power windows, locks, and mirrors, heated mirrors, and remote entry. These join cruise control, a CD player, tilt and power steering, a front power outlet, intermittent wipers, and a tachometer. Both front and rear benches split-fold, and bucket seats are available for the front row, along with an overhead storage console and rear sliding window. Tow hooks are standard in the cargo bed, and a trailer hitch is optional. Towing capacity maxes out at 5,700 pounds. An extra option with the SL2 is satellite radio.

Crew Cab w/Sport Package 5.8 ft. SB

The Sport Package adds larger 20-inch, five-spoke alloy wheels to complement the chrome grille and bumpers on the GMC Sierra 1500 SL2 Crew Cab with Sport Package. This rear-wheel-drive pickup seats six in two rows, with four full-size doors and a 5.8-foot cargo bed. Rear legroom expands six inches from that in the Extended models. The truck rides on a short and long arm front and solid live axle rear suspension. Under the hood is a 4.8-liter V8 that delivers 285-hp and 295 ft-lbs of torque. It's matched to a 4-speed automatic, but a 5-speed manual can be substituted, along with a 295-hp, 5.3-liter V8 or a 195-hp, 4.3-liter V6.

The SL2 Crew Cab can tow up to 5,900 pounds and achieves 16/19 mpg. A trailer hitch is optional, but tow hooks come standard. The front disc and rear drum brakes come with 4-wheel ABS and electronic brakeforce distribution. Dual front airbags feature passenger deactivation. Automatic headlights and daytime running lights are also standard. A locking rear differential and skid plates are available add-ons. The SL2 adds heated mirrors, power windows, locks, and mirrors, remote entry, and upgraded cloth seats. Also part of the package are cruise control, a CD player, intermittent wipers, tilt and power steering, a front power outlet, and front cupholders. A sliding rear window costs extra, along with satellite radio.

SLE1
Crew Cab 4WD 5.8 ft. SB
Avg. Price: $16,341

Doubling as both a family and work truck, the four-door 2006 GMC Sierra 1500 SLE1 Crew Cab 4WD seats six comfortably in two full-size rows, with split-folding benches and 39 inches of rear legroom. The 5.8-foot cargo bed comes with tow hooks, and an optional trailer hitch can tow up to 9,900 pounds with the 5.3-liter, 295-hp V8 and 4-speed automatic. This trim's low towing capacity is due to its on-demand four-wheel-drive system, which comes with a locking center differential and high- and low-range gearing. This means you can take the half-ton pickup off-road; optional skid plates, larger 20-inch wheels in place of the standard 17-inch, and a locking rear differential increase off-road confidence.

The pickup earns only three and four stars in crash tests, perhaps due to its lack of side impact and curtain airbags. A front stabilizer bar, 4-wheel ABS brakes with electronic brakeforce distribution, and dual front airbags are all standard. The truck sits on a short and long arm front and solid live axle rear suspension. Automatic headlights, foglights, and an auto-dimming rearview mirror are all standard. Paying extra gets you Onstar and mirrors with turn signals.

Full power features include remote entry, cruise control, a security system, and heated extendable mirrors. Leather trim on the steering wheel dresses up the interior, and leather seats can be added. A CD player comes with radio data. Wheel-mounted audio controls and satellite radio are optional. Other standard equipment includes tilt and power steering, a tachometer, a front power outlet, intermittent wipers, and a temperature display and compass. A power driver's seat with memory settings, automatic climate control, a trip computer, and sliding rear window can all be added.

Crew Cab 5.8 ft. SB
Avg. Price: $14,412

The first thing you'll notice about the 2006 GMC Sierra 1500 SLE1 Crew Cab is its four full-size doors and extra legroom for backseat passengers. Legroom increases from 33.7 inches in the Extended Cabs to 39 inches in the Crew. What suffers is the cargo bed, which comes only in the 5.8-foot length. The 6.5- and 8-foot beds are not available with the Crew Cab. This rear-wheel-drive pickup also gets the strong 5.3-liter V8 that produces 285-hp and 335 ft-lbs of torque at 4,000 RPM. It is paired with a 4-speed automatic and can tow more than 10,000 pounds with the optional trailer hitch (tow hooks are standard). A 6.0-liter, 345-hp V8 is available.

Otherwise, the 2006 Sierra 1500 SLE1 Crew Cab resembles the Extended Cab trims in terms of features. Power windows, locks, and extendable heated mirrors, cruise control, a CD player with radio data, leather steering-wheel trim, remote entry, intermittent wipers, a front power outlet, a tachometer, tilt and power steering, and a compass and temperature display are all standard. Add-ons include a power driver's seat with memory settings, wheel-mounted audio controls, satellite radio, a trip computer, and leather seats.

In terms of safety, the pickup ranks average. Dual front airbags with passenger deactivation are standard, but no side curtain bags are available. Front disc and rear drum brakes are complemented by 4-wheel ABS and electronic brakeforce distribution. 17-inch wheels are standard, with the option to add 20-inch alloy ones. Automatic headlights and foglights help at night. Available options include a locking rear differential, skid plates, traction control, mirrors with turn signals, and OnStar.

Extended Cab 4WD 5.8 ft. SB

The on-demand 4WD system in the 2006 GMC Sierra 1500 SLE1 Extended Cab 4WD comes with a center locking differential, with the option to add a rear locking differential. Optional skid plates, a heavy-duty suspension, and off-road tires, along with standard low-range gearing, improve off-road performance. This four-door, half-ton pickup features two rows of seats, but a small 5.8-foot cargo bed. Still, with the standard 285-hp, 4.8-liter V8 with 295 ft-lbs of torque, it can haul up to 8,700 pounds when equipped with the optional trailer hitch. Tow hooks are standard.

Riding on a short and long arm front and solid live axle rear suspension, the 2006 Sierra 1500 SLE1 Extended 4WD uses 17-inch wheels with all-season tires, though alloy wheels and 20-inch wheels are available. Dual front airbags with passenger deactivation, front disc and rear drum brakes, 4-wheel ABS brakes, a front stabilizer bar, automatic headlights, and foglights earn three and four stars in crash tests. To beef up the safety profile, OnStar and mirrors with turn signals can be added.

Moving up to the SLE1 gets you full power features, including remote entry, heated mirrors, and cruise control. A CD player, leather trim, intermittent wipers, a front power outlet, tachometer, and a temperature display and compass are all standard. A chrome grille and bumpers flash up the exterior. Both bench rows split-fold, and front bucket seats are available. Rounding out the options package are a trip computer, wheel-mounted audio controls, a power driver's seat with memory, satellite radio, and a sliding rear window.

Extended Cab 4WD 6.5 ft. SB
Avg. Price: $14,654

The 2006 GMC Sierra 1500 SLE1 Extended Cab 4WD 6.5 SB is much like the 5.8 SB version in terms of standard equipment. The major difference is ten extra inches, which translates to a 6.5-foot bed. Inside, the two bench seats hold six passengers, though rear legroom is limited. Both benches split-fold. Though it has four doors, the rear doors are smaller and reverse-hinged. Fueling all this is a 4.8-liter, 285-hp V8 and 4-speed automatic transmission that get 15/19 mpg and can haul 10,000 pounds with the optional trailer hitch. Both a 5.3-liter V8 and a 6.0-liter V8 engine are available.

This trim features on-demand 4WD with both high- and low-range gearing for off-road utility. 8.4 inches of ground clearance, a locking center differential, and available off-road tires, 20-inch wheels, skid plates, and a locking rear differential improve performance. A front stabilizer bar, 4-wheel ABS brakes with electronic brakeforce distribution, dual front airbags, 17-inch wheels with all-season tires, foglights, and automatic headlights complete the safety equipment. Available options are Onstar and mirrors with turn signals. Stability control and side curtain airbags are not offered.

Keeping things easy for the driver are power windows, locks, and extendable heated mirrors, as well as remote entry, cruise control, leather trim, a CD player, and intermittent wipers. A tachometer, compass, and temperature display reside on the dash. There is also a front power outlet. If you take this pickup out to play after working all day, it can be equipped with a power driver's seat, memory settings, leather upholstery, automatic climate control, wheel-mounted audio controls, and a trip computer. Privacy glass and a sliding rear window are other options.

Extended Cab 4WD 8 ft. LB
1 national listing
Avg. Price: $14,316

Maybe it's the 19 extra inches of length and longer 8-foot cargo bed in the 2006 GMC Sierra 1500 SLE1 Extended Cab 4WD LB that drive its use of a beefy 5.3-liter, 295-hp V8 and 4-speed automatic. Or maybe it's the on-demand 4WD system that's built to deliver off-road power effectively thanks to high- and low-range gearing options. This particular SLE1 trim in the half-ton pickup lineup gets 335 ft-lbs of torque at 4,000 RPM. Accompanying the 4WD is a center locking differential and 17-inch wheels with all-season tires, but improved performance can be had with the optional 20-inch alloy wheels, skid plates, and a locking rear differential. Also available is a 285-hp, 4.8-liter V8.

The 2006 Sierra 1500 SLE1 Extended Cab 4WD LB also seats six passengers and features four doors (the rear ones are not full-size). The bench seats split-fold, and front bucket seats are optional. Full power features, remote entry, heated mirrors, a CD player, leather trim, and cruise control are all standard. Other conveniences include intermittent wipers, a front power outlet, tilt and power steering, a tachometer, and a compass and temperature readout. The cargo bed comes with two hooks and can be outfitted with a trailer hitch. Chrome decorates the bumpers and grille. Three- and four-star safety ratings come from the dual front airbags with passenger deactivation, 4-wheel ABS and electronic brakeforce distribution, front stabilizer bar, automatic headlights, and foglights.

OnStar and mirrors with turn signals help with the safety profile. The comfort profile improves with the addition of wheel-mounted audio controls, automatic climate control, a power driver's seat with memory settings, leather upholstery, a trip computer, and satellite radio.

Extended Cab 5.8 ft. SB

This rear-wheel-drive pickup trim features two rows of seats, accessed via reverse-hinged quarter rear doors. It offers 15 more inches of wheelbase than the Regular Cab, but rear legroom in the 2006 GMC Sierra 1500 SLE1 Extended Cab measures only 33.7 inches. This particular trim comes with a 5.8-foot cargo bed, equipped with tow hooks. An optional trailer hitch lets you tow up to 8,000 pounds with the 4.8-liter, 285-hp V8. It is matched to a 4-speed automatic and gets 295 ft-lbs of torque. A 5.3-liter, 295-hp V8 in regular or flex fuel version is available.

The extra row of seats and seatback pockets are the major additions to the Extended Cab in the SLE1 trim. A full power setup includes extendable heated mirrors, cruise control, and remote entry. Premium cloth seats, leather trim on the steering wheel and shifter, a compass and temperature display, intermittent wipers, a front power outlet, a CD player with radio data, and a tachometer are all standard. More luxurious features are available, in the form of leather seats, satellite radio, power driver's seat with memory settings, a trip computer, and wheel-mounted audio controls.

Safety equipment includes front disc and rear drum brakes, 4-wheel ABS brakes with electronic brakeforce distribution, dual front airbags, a front stabilizer bar, 17-inch wheels with all-season tires (20-inch alloy are optional). Foglights, an auto-dimming rearview mirror, automatic headlights, and daytime running lights take care of nighttime driving. For rear-wheel-drive trims, traction control is available. Other options include skid plates, Onstar, mirrors with turn signals, and a locking rear differential.

Extended Cab 6.5 ft. SB
Avg. Price: $12,801

With ten more inches in overall length and wheelbase, the 2006 GMC Sierra 1500 SLE1 Extended Cab SB sports a 6.5-foot-long cargo bed. The half-ton pickup comes with four doors, though the rear ones open toward the back and in conjunction with the front doors. Two rows of split-folding bench seats fit six passengers, but front bucket seats can be substituted. Rear legroom is a tiny 33.7 inches. The rear-wheel-drive SLE1 sits on a short and long arm front and solid live axle rear suspension and rides on 17-inch steel wheels with all-season tires. Alloy wheels are optional, as are larger 20-inch wheels.

A 4.8-liter, 285-hp V8 and 4-speed automatic that get around 16/19 mpg can tow nearly 10,000 pounds. A more eco-friendly flex fuel 5.3-liter V8 is available, along with a powerful 345-hp 6.0-liter V8 and heavy duty suspension, for extra hauling capacity. Earning only three and four stars in frontal impact and rollover tests, the pickup comes standard with dual front airbags with passenger airbag sensors, 4-wheel ABS with electronic brakeforce distribution, and a front stabilizer bar. Also on hand are automatic headlights, foglights, and an auto-dimming rearview mirror. Adding more security are optional traction control, OnStar, skid plates, a locking rear differential, and mirrors with turn signals.

Driver comfort is taken care of by a full power setup, remote entry, cruise control, leather trim, and a CD player. A tachometer, front power outlet, intermittent wipers, tilt and power steering, and a compass and temperature display provide extra convenience. A long list of options add leather seats, a power driver's seat with memory settings, a trip computer, wheel-mounted audio controls, satellite radio, and a sliding rear window.

Extended Cab 8 ft. LB
1 national listing
Avg. Price: $14,507

An extra 19 inches in length and 14 inches in wheelbase permit a longer 8-foot cargo bed on the 2006 GMC Sierra 1500 SLE1 Extended Cab LB. The rear-wheel-drive pickup seats six in two rows that split-fold, and the front bench can be replaced with bucket seats. The longer bed requires a 295-hp, 5.3-liter V8 that delivers 335 ft-lbs of torque at 4,000 RPM and can tow 8,000 pounds. It is paired with a 4-speed automatic. The other engine option is a 285-hp, 4.8-liter V8. Fuel economy sits in the mid-teens.

The pickup bed comes with tow hooks and the option to add a trailer hitch. The SLE1 comes standard with full power features, remote entry, cruise control, heated mirrors, leather trim, a CD player, front power outlet and cupholders, tilt and power steering, a security system, a temperature readout and compass, and intermittent wipers. Extended Cabs feature four doors, though the smaller rear doors do not open independently of the front doors. For those using the truck for comfort, along with utility, you can add a power driver's seat with memory settings, leather upholstery, a trip computer, wheel-mounted audio controls, and satellite radio.

On the safety front, the Sierra SLE1 Extended LB rates average, with standard 4-wheel ABS brakes and electronic brakeforce distribution, dual front airbags, 17-inch wheels with all-season tires (alloy available), and a front stabilizer bar. Side curtain bags are not offered, but traction control is, along with a locking rear differential, OnStar, mirrors with turn signals, and skid plates. Foglights, daytime running lights, and automatic headlights are all standard.

Regular Cab 4WD 6.5 ft. SB
Avg. Price: $14,821

The 4WD system in the 2006 GMC Sierra 1500 SLE1 Regular Cab 4WD SB moves you up to an on-demand full-time system (Autotrac) that comes with automatic locking hubs and a center differential. Equipped with high- and low-range gearing, this half-ton pickup is a capable off-roader as well, and the optional skid plates help with its 8.4 inches of ground clearance. A locking rear differential is also optional.

The 2006 Sierra 1500 SLE1 Regular 4WD SB seats three in one front-row bench, though bucket seats can be substituted. The cargo bed measures 6.5 feet and comes with tow hooks. Towing capacity reaches 9,100 pounds with the 4.8-liter, 285-hp V8 and 4-speed automatic, though a flex fuel 295-hp, 5.3-liter V8 is also available. The pickup rides on a short and long arm front and solid live axle rear suspension. A front stabilizer bar, dual front airbags with passenger deactivation, front disc and rear drum brakes, and 4-wheel ABS provide the four-star safety features. Automatic headlights, an auto-dimming rearview mirror, and foglights are included. Options add mirrors with turn signals and OnStar.

The SLE1 is where luxury starts to make an appearance, with standard power features, remote entry, heated extendable mirrors, leather steering-wheel trim, cruise control, and a CD player with radio data. Intermittent wipers, a tachometer, a front power outlet, tilt and power steering, and a temperature display add extra convenience. An array of options include a power driver's seat with memory settings, satellite radio, wheel-mounted audio controls, a sliding rear window, and a trip computer.

Regular Cab 4WD 8 ft. LB

By day a work truck, the 2006 GMC Sierra 1500 SLE1 Regular Cab 4WD LB has a surprising number of high-end comfort features for a pickup. This half-ton model features on-demand 4WD with low-range gearing, a center differential, 8.4 inches of ground clearance, and 17-inch steel wheels with all-season tires. Able to perform off-road, it can also be outfitted with a heavy-duty suspension and skid plates. A 4.8-liter V8 gets 285 hp and 295 ft-lbs of torque at 4,000 RPM, with 16/19 mpg. A 4-speed automatic is the only transmission (no 5-speed manual option). Also offered is a 5.3-liter, 295-hp V8. It can tow 8,900 pounds with the optional trailer hitch. Tow hooks are standard.

The Regular Cab means one row of seats, but 19 more inches of overall length allow for an 8-foot cargo bed. Front passengers are treated to power windows, locks, and heated extendable mirrors, as well as remote entry, cruise control, a CD player, leather trim, and a front power outlet.

Convenience features include a trip computer on the dash, along with a compass and temperature display, a tachometer, and intermittent wipers. A security system is also in place. For a bit more flash, you can add satellite radio with audio controls on the steering wheel, privacy glass, and a power driver's seat with memory settings. Making things fancy on the outside are a chrome grille and bumpers, with the option to add alloy wheels.

Upgrading from the SL1, the safety profile adds standard foglights and an auto-dimming rearview mirror, plus more options such as OnStar and mirrors with turn signals. An average crash test rating (four and three stars) comes from the minimum safety features. These include dual front airbags, 4-wheel ABS with electronic brakeforce distribution, a front stabilizer bar, and automatic headlights. Traction control is not offered with the 4WD models.

Regular Cab 6.5 ft. SB
5 national listings
Avg. Price: $12,202

Blending a bit of luxury with pickup utility, the 2006 GMC Sierra 1500 SLE1 Regular Cab SB is a good fit for those who don't want to sacrifice comfort for functionality. The two-door, rear-wheel-drive pickup seats three in a front-row bench (bucket seats are optional) and comes with a 6.5-foot cargo bed equipped with tow hooks. The SLE1 Regular Cab upgrades from the SL1 with full power features, heated mirrors, remote entry, leather trim on the steering wheel and shifter, a compass and temperature readout, and upgraded cloth upholstery. These are in addition to already standard cruise control, a CD player with radio data, intermittent wipers, tilt and power steering, a front power outlet, and a tachometer. Satellite radio is optional.

The pickup is powered by a 4.8-liter, 285-hp V8 with 295 ft-lbs of torque at 4,000 RPM. This is matched to a 4-speed automatic. A 5.3-liter V8, available in a flex fuel version, is optional. An optional trailer hitch allows you to tow up to 8,400 pounds. The SLE1 rides on 17-inch chrome wheels with all-season tires.

Safety equipment includes 4-wheel ABS brakes with electronic brakeforce distribution, dual front airbags with passenger deactivation, a front stabilizer bar, and automatic headlights. The SLE1 adds standard foglights and an auto-dimming rearview mirror. However, this pickup earns average marks in crash tests. Traction control is available as an option, along with a locking rear differential and skid plates. New SLE1 options include OnStar, alloy wheels, and mirrors with turn signals.

There are many more options for the SLE1, including a power driver's seat with memory settings, a trip computer, and wheel-mounted audio controls.

Regular Cab 8 ft. LB

The 2006 GMC Sierra 1500 SLE1 Regular Cab LB substitutes an 8-foot cargo bed for the 6.5-foot standard one, increasing cargo capacity while maintaining interior cabin space. The longer bed increases overall length by 19 inches. The two-door, rear-wheel-drive pickup seats three in one row, but comes nicely equipped with full power features, remote entry, heated extendable mirrors, and leather steering-wheel trim. A temperature display and compass join the tachometer. Also standard are cruise control, a CD player, intermittent wipers, tilt and power steering, a security system, and a front power outlet. Upgraded options include satellite radio, a power driver's seat with memory settings, wheel-mounted audio controls, and a trip computer.

Bucket seats can be substituted for the front-row bench. A rear sliding window is also available. The pickup gets its juice from a 285-hp, 4.8-liter V8 and 4-speed automatic, with the option to add a 5.3-liter, 295-hp V8 with flex fuel capability. 17-inch steel wheels are standard, but alloy wheels are available. The SLE1 adds foglights and an auto-dimming rearview mirror to the lighting package, which includes automatic headlights.

A front disc and rear drum brake setup comes with 4-wheel disc and ABS brakes with electronic brakeforce distribution. Dual front airbags earn three and four stars in crash tests. The SLE1 adds more safety options, such as mirrors with turn signals, OnStar, skid plates, a locking rear differential, traction control, and a trailer hitch to tow up to 8,200 pounds.

SLE2
Crew Cab 4WD 5.8 ft. SB
Avg. Price: $16,778

Equipped with both high- and low-range gearing, the on-demand 4WD system in the 2006 GMC Sierra 1500 SLE2 Crew Cab 4WD lets you switch between on- and off-road performance. A locking center differential is standard (a rear differential costs more). You can add skid plates, a driver-adjustable suspension, and larger 20-inch wheels for more confidence, or stick with the standard 17-inch wheels with all-season tires. Ground clearance is just under 9 inches. A 5.3-liter V8 paired with a 4-speed automatic produces 295 hp and 335 ft-lbs of torque at 4,000 RPM. A 6.0-liter, 345-hp V8 is optional for this four-door pickup.

As a Crew Cab, the 2006 Sierra 1500 SLE2 seats six in two rows of benches with 37 inches of rear legroom. Both rows split-fold, and there is a fold-down armrest in the back. The extra space means the pickup bed shrinks to 5.8 feet long. It comes with tow hooks and can be outfitted with a trailer hitch for a towing capacity of 9,900 pounds. A power driver's seat and new MP3 input jack join the full power setup, remote entry, cruise control, leather trim, CD/MP3 player, tilt and power steering, heated mirrors, intermittent wipers, front power outlet, tachometer, security system, and the temperature display and compass. If that's not enough for you, available options include a DVD player, leather seats, memory settings, a sunroof, a 6-CD changer, automatic climate control, and audio controls on the steering wheel and in the backseat.

Although its large enough to carry a family, the safety profile of this pickup isn't one of its strong points. Earning only three and four stars, the Sierra SLE2 features dual front airbags only. No side curtain bags are offered. Front disc and rear drum brakes and 4-wheel ABS include electronic brakeforce distribution. The SLE adds an auto-dimming rearview mirror to the lighting package, which includes automatic headlights and foglights. Auto-dimming side mirrors are optional. Added safety comes with the optional mirrors with turn signals and OnStar.

Crew Cab 5.8 ft. SB

Upgrading to the 2006 GMC Sierra 1500 SLE2 Crew Cab gets you several things. First, it gives you four full-sized doors and more interior passenger space, with six more inches of rear legroom than the Extended offers. This is because the rear-wheel drive pickup is only offered with a 5.8-foot cargo bed. The SLE2 part adds a power driver's seat and an auto-dimming rearview mirror.

The whole package gets its juice from a 295-hp, 5.3-liter, 24-valve V8, which puts out 335 ft-bls of torque and averages 16/21 mpg. A 4-speed automatic is the only transmission. A 345-hp, 6.0 V8 is available. Rear seats split-fold and feature a fold-down armrest. A manual sliding rear window opening onto the pickup bed is optional. The 2006 Sierra 1500 SLE2 Crew Cab does not rank well in the safety category. It comes equipped with front disc and rear drum brakes, 4-wheel ABS with electronic brakeforce distribution, and dual front airbags. It sits on 17-inch wheels with all-season tires, with the option to add both alloy and 20-inch wheels. Foglights, halogen lamps, and automatic headlights are all standard. Options add mirrors with turn signals, auto-dimming side mirrors, a locking rear differential, OnStar, skid plates, and an adjustable suspension.

In addition to the power driver's seat, you get power windows, locks, and heated extendable mirrors. Remote entry, cruise control, a CD/MP3 player with input jack, three months of satellite radio, a security system, and leather trim. Convenience features include intermittent wipers, a tachometer, a front power outlet, cupholders, and a compass and temperature readout. SLE2 trims have the option to add a DVD player and memory settings for the driver, along with a sunroof, trip computer, leather upholstery, wheel-mounted and rear audio controls, and a trailer hitch.

Extended Cab 4WD 5.8 ft. SB

Because it comes with both high- and low-range gearing, the on-demand 4WD system in the 2006 GMC Sierra 1500 SLE2 Extended Cab 4WD 5.8 SB can be taken off-road. But its optional skid plates and adjustable suspension will better protect the underside of the truck, which has 8.7 inches of ground clearance. The system features a center locking differential, with the option to add a rear locking differential. 17-inch wheels with all-season tires are standard. Under the hood is a 5.3-liter V8 that puts out 295 hp and 335 ft-lbs of torque, paired with a 4-speed automatic. Towing power averages 8,700 pounds.

This trim has the shortest Sierra cargo bed, at 5.8 feet, which comes standard with tow hooks. The cab features two rows of bench seats that split-fold, though the second row has only 33.7 inches of legroom. A folding armrest and various storage pockets and consoles are passenger-friendly.

Keeping things safe are front disc and rear drum brakes, 4-wheel ABS, dual front airbags, a front stabilizer bar, automatic headlights, foglights, and an auto-dimming rearview mirror. The half-ton pickup rides on a short and long arm front and solid live axle rear suspension. OnStar and mirrors with turn signals are available options.

A power driver's seat comes standard with the 2006 Sierra 1500 SLE2, joining power windows, locks, and extendable heated mirrors, remote entry, cruise control, leather trim, and a CD player. The requisite intermittent wipers, tachometer, tilt and power steering, and front power outlet are also included. Accessories add memory settings for the driver's seat, a CD changer, satellite radio, a sunroof, wheel-mounted and rear audio controls, leather seats, and alloy wheels.

Extended Cab 4WD 6.5 ft. SB
Avg. Price: $14,599

Choosing the longer 2006 GMC Sierra 1500 SLE2 Extended Cab 4WD 6.5 SB gets you a 6.5-foot cargo bed and off-road capability with the on-demand 4WD system. Equipped with a center locking differential and both high- and low-range gearing, this half-ton pickup can tackle back roads capably. You can beef up its functionality by adding optional skid plates, a rear locking differential, a driver-adjustable suspension, and larger 20-inch wheels in place of the standard 17-inch with all-season tires. Backing this up is a 295-hp, 5.3-liter V8 (a flex fuel version is available) mated to a 4-speed automatic. Tow hooks come standard with the bed, but an optional trailer hitch allows you to tow 10,000 pounds. A 345-hp, 6.0-liter V8 is available.

This six-passenger half-ton pickup earns only average crash test ratings. 4-wheel ABS comes with electronic brakeforce distribution, and dual front airbags feature passenger deactivation. There are no side curtain bags. A front stabilizer bar provides added protection. Automatic headlights, an auto-dimming rearview mirror, and foglights round out the package. OnStar, regenerative braking, and auto-dimming side mirrors with turn signals are optional.

Although it's a four-door pickup, the rear doors are half-size and open only in conjunction with the front doors. A power driver's seat boosts the comfort factor in the SLE2. Other features include a full power setup, heated mirrors, remote entry, a CD player with radio data, cruise control, leather trim, intermittent wipers, a front power outlet, a security system, and a temperature display and compass. You can add leather seats and memory settings for the driver, along with a CD changer and satellite radio, wheel-mounted and backseat audio controls, and a trip computer.

Extended Cab 4WD 8 ft. LB

The 2006 GMC Sierra 1500 SLE2 Extended 4WD LB adds full-time on-demand all-wheel drive, along with a center locking differential and high- and low-range gearing. Equipped with a short and long arm front and solid live axle rear suspension, 17-inch wheels with all-season tires, and 8.7 inches of ground clearance, this 5-passenger pickup can tackle off-road jobs. You may want to add the optional skid plates, locking rear differential, adjustable suspension, and off-road tires, however. Powering all this is a 5.3-liter, 295-hp V8 that gets 335 ft-lbs of torque at 4,000 RPM. It is matched to a 4-speed automatic and can tow up to 8,500 pounds with the optional trailer hitch.

The pickup bed reaches 8 feet long, thanks to a longer overall length and wheelbase (249 and 157 inches respectively). Rear passenger legroom maxes out at 33.7 inches, and the rear passenger doors are smaller and reverse-hinged. The 2006 Sierra 1500 SLE2 offers plenty of comfort features. These include power windows, locks, and extendable heated mirrors, a power driver's seat, cruise control, remote entry, a CD/MP3 player on the wheel and in the backseat, a new MP3 input jack, and satellite radio. Up front you'll find a power outlet, intermittent wipers, a temperature display and compass, a tachometer, and leather trim on the steering wheel. If you need more, you can add the optional trip computer and driver's memory settings. Also available are a CD changer with wheel-mounted and rear audio controls, a sunroof, and leather seats.

In the safety category, this pickup earns three and four stars. 4-wheel ABS brakes feature electronic brakeforce distribution. Also standard are dual front airbags with passenger deactivation, a front stabilizer bar, automatic headlights, an auto-dimming rearview mirror, and foglights. OnStar, mirrors with turn signals, auto-dimming side mirrors, alloy wheels, and a security system are available options.

Extended Cab 5.8 ft. SB

The only major upgrades you get when you move up to the 2006 GMC Sierra 1500 SLE2 Extended Cab 5.8 SB are a power driver's seat and a larger 5.3-liter V8 that gets 295 hp and 335 ft-lbs of torque at 4,000 RPM. It's paired with a 4-speed automatic, and a flex fuel version is available. It also offers more options, such as a power sunroof, a CD changer and rear audio controls, an adjustable suspension, and regenerative braking.

The Extended Cab seats six in two bench rows that split-fold and come with folding armrests. At only 220 inches long (compared to a standard Extended Cab's 230), the rear-wheel-drive pickup features a 5.8-foot cargo bed. Tow hooks are standard, and a trailer hitch is optional (it can tow around 8,000 pounds). Full power features, remote entry, a CD player, cruise control, tilt and power steering, intermittent wipers, a front power outlet, a tachometer, leather wheel trim, and a compass and temperature display are all standard. Options add wheel-mounted audio controls, a trip computer, automatic climate control, leather seats, memory settings for the driver's seat, and a manual sliding rear window.

The SLE2 still earns only three and four stars in crash tests. Dual front airbags feature passenger sensors, but no curtain bags are offered. 4-wheel ABS comes with electronic brakeforce distribution. The 17-inch steel wheels with all-season tires can be replaced with alloy wheels and larger 20-inch wheels. At nighttime, the standard foglights, automatic headlights, and auto-dimming rearview mirror come in handy. Options add the auto-dimming feature to the side mirrors, along with OnStar, skid plates, and mirrors with turn signals.

Extended Cab 8 ft. LB

A larger overall length and wheelbase create a longer 8-foot cargo bed in this rear-wheel-drive, half-ton pickup. The 2006 GMC Sierra 1500 SLE2 Extended Cab LB comes with a stronger engine than the SLE1 - a 5.3-liter V8 with 295 hp and 335 ft-lbs of torque at 4,000 RPM. It's paired with a 4-speed automatic and can tow nearly 8,000 pounds when equipped with the optional trailer hitch. Tow hooks come standard. Also added with the SLE2 is a power driver's seat, though memory settings cost extra.

The pickup seats six in two rows, though the second row is somewhat cramped and accessed through its own set of smaller, reverse-hinged rear doors. Both rows split-fold and feature storage compartments. A full power setup includes remote entry and cruise control. A CD player is standard, with the option to add satellite radio and both wheel-mounted and rear audio controls. Intermittent wipers, a security system, a temperature display and compass, a front power outlet, heated extendable mirrors, and leather steering-wheel trim are also part of the SLE2 package. Leather upholstery, a sunroof, and a trip computer are optional.

This trim earns only average crash test scores, in part due to its lack of available side curtain airbags. It does come equipped with dual front bags with passenger sensors, 4-wheel ABS, a front stabilizer bar, 17-inch steel wheels with all-season tires (alloy wheels optional), tilt and power steering, automatic headlights, foglights, and an auto-dimming rearview mirror. This latter function can be added to the side mirrors. Other safety options include OnStar, traction control, an adjustable suspension, and turn signals incorporated into the mirrors.

Extended Cab SB 6.5 ft.
1 national listing
Avg. Price: $14,285

The 2006 GMC Sierra 1500 SLE2 Extended Cab SB measures 230 inches in length, with a 143-inch wheelbase, meaning the cargo bed expands to 6.5 feet long in this trim. The rear-wheel-drive, half-ton pickup is powered by a 295-hp, 5.3-liter V8 and 4-speed automatic, but a 6.0-liter, 345-hp V8 is available, along with a flex fuel version of the 5.3-liter V8. Fuel economy averages 16/19 mpg. The pickup rides on a short and long arm front and solid live axle rear suspension and uses 17-inch steel wheels with all-season tires. Larger 20-inch wheels are available.

The bed comes with tow hooks, but a trailer hitch is an extra feature. Fully equipped, the 2006 Sierra 1500 SLE2 Extended Cab SB can tow 10,400 pounds. It has two rows of seats, though the rear seat is limited and has only 33.7 inches of legroom. The rear passenger doors are undersized and open in conjunction with the front doors. Full power features include a power driver's seat, remote entry, heated extendable mirrors, a CD player, cruise control, and intermittent wipers. Leather steering-wheel trim, a front power outlet, a tachometer, and a temperature display and compass are also standard. Options add audio controls in the backseat and on the wheel, satellite radio, leather upholstery, memory settings for the driver's seat, automatic climate control, a CD changer, and a power sunroof.

Safety equipment is fairly minimal, but this Sierra does feature dual front airbags with passenger sensors, 4-wheel ABS brakes with electronic brakeforce distribution, a front stabilizer bar, automatic headlights, foglights, and an auto-dimming rearview mirror. Traction control is available as an option. Auto-dimming side mirrors also cost extra, as does an adjustable suspension, regenerative braking, OnStar, mirrors with turn signals, a locking rear differential, and skid plates.

SLT
Crew Cab 4WD 5.8 ft. SB
Avg. Price: $16,731

A nice blend of family truck and utility pickup, the 2006 GMC Sierra 1500 SLT Crew Cab 4WD features on-demand four-wheel drive with high and low-range gearing for off-road performance. It is coupled with a center locking differential, 8.7 inches of ground clearance, and 17-inch alloy wheels with all-season tires. For those intending more rugged use, there is the option to add a locking rear differential, larger 20-inch tires, an adjustable suspension, and skid plates. The Crew Cab comes with a 5.8-foot bed equipped with tow hooks. An optional trailer hitch lets you haul 10,000 pounds with the 5.3-liter V8. Paired with a 4-speed automatic, this engine gets 295-hp and 335 ft-lbs of torque at 4000 RPM. A more powerful 6.0-liter, 345-hp V8 can be substituted.

That's the utility. Now for the family comfort. The cabin seats five in two rows, with front bucket seats and a split-folding rear bench. Legroom is nearly 40 inches in the backseat. Moving to the SLT means the added luxury of leather upholstery, and heated power front seats with driver's memory settings. Other upgrades include wheel-mounted audio controls, a CD-changer with MP3 jack, and a trip computer. Carryovers from the SLE2 include a full power setup, heated extendable mirrors with turn signals, cruise control, remote entry, intermittent wipers, a temperature readout and compass, and a front power outlet. Those craving even more can add a DVD player, sunroof, satellite radio, and automatic climate control. A sliding manual rear window is also available.

The 2006 Sierra 1500 SLT Crew Cab 4WD receives middling crash test scores, perhaps due to the lack of airbags. You'll find only dual front ones with passenger deactivation. Four-wheel ABS brakes come with electronic brakeforce distribution, but traction control is not offered on 4WD models. Automatic headlights, auto-dimming mirrors (inside and out), halogen lamps, and foglights are part of the standard package. OnStar is optional.

Crew Cab 5.8 ft. SB
Avg. Price: $15,291

The 2006 GMC Sierra 1500 SLT Crew Cab stretches 230 inches long, but only carries a 5.8-foot pickup bed. This is because the extra space is devoted to the interior cabin, with 41 inches of front and 39 inches of rear legroom. The half-ton, rear-wheel drive pickup features four regular-sized doors. The front bucket seats and split-folding rear bench hold five passengers. A 295-hp, 5.3-liter single overhead cam V8 and 4-speed automatic average 16/20 mpg and can tow up to 10,100 pounds. Tow hooks come standard, with the option to add a trailer hitch. If you need more power, a 6.0-liter, 345-hp V8 is available.

Other than its larger cabin, the 2008 Sierra 1500 SLT Crew Cab offers the same standard equipment as the SLT Extended. It tacks on leather upholstery, heated front seats, power front seats with driver's memory, wheel-mounted cruise and audio controls for the CD changer/MP3 player, mirrors with turn signals and a reverse-tilt feature, and a trip computer to what you get on the SLE2. This includes full power features, remote entry, heated extendable mirrors, a security system, a front power outlet, tilt steering, intermittent wipers, and leather trim. Satellite radio, a sunroof, and automatic climate control are available extras, and the Crew Cab adds a DVD player to the options list.

Riding on 17-inch alloy wheels and all-season tires (20-inch alloys are optional), this pickup keeps safety features to a minimum. Standard equipment includes dual front airbags, a front stabilizer bar, and 4-wheel ABS brakes with electronic brakeforce distribution. An adjustable suspension and locking rear differential can be added to the short and long arm front and solid live axle rear suspension. Over in the lighting department, you'll find an auto-dimming rearview mirror and side mirrors, automatic headlights, and foglights. OnStar, skid plates, and traction control are also available.

Extended Cab 4WD 5.8 ft. SB

The 2006 GMC Sierra 1500 SLT Extended Cab 4WD 5.8 is a half-ton pickup with a 5.8-foot bed. It is the smallest of the Sierra 1500 series, but also one of the most high-end in terms of convienence features. The on-demand 4WD system operates both on and off-road, thanks to high and low-range gearing and a center locking differential. A rear locking differential costs extra, as do skid plates and an adjustable suspension. The 17-inch alloy wheels with all-season tires can be replaced with larger 20-inch wheels. Powering this pickup is a 295-hp, 5.3-liter, 16-valve V8, offering 335 ft-lbs of torque at 4000 RPM. It gets 16/20 mpg and tows 8700 pounds. Tow hooks are standard and a trailer hitch costs extra.

The pickup seats five in front row bucket seata and a rear split-folding bench. The four doors include smaller reverse-hinged rear doors. The 2006 Sierra 1500 SLT Extended 4WD 5.8 delivers leather upholstery, heated front seats, power front seats with driver's memory settings, a trip computer (along with a tachometer, compass, and temperature display), and wheel-mounted cruise and audio controls for the 6-CD changer with MP3 input jack. Satellite radio is optional. Tilt steering, intermittent wipers, a front power outlet, a security system, leather steering wheel trim, heated mirrors, remote entry, and a full power setup round out the package. An auto-dimming feature is standard on all mirrors, and the side mirrors now sport turn signals and can reverse-tilt.

Keeping things relatively safe are dual front airbags with passenger deactivation, a front stabilizer bar, and four-wheel ABS brakes with electronic brakeforce distribution. Lighting the way are halogen lamps, automatic headlights, daytime running lights, and foglights. OnStar is available, but traction control is not on 4WD models. Other nicer options include a sunroof and automatic climate control.

Extended Cab 4WD 6.5 ft. SB
Avg. Price: $16,974

An on-demand 4WD system in the 2006 GMC Sierra 1500 SLT Extended Cab 4WD SB pickup comes standard with a locking center differential, 17-inch alloy wheels with all-season tires, 8.7 inches of ground clearance, and both high and low-range gearing for off-road use. You can improve performance by adding larger 20-inch wheels, a driver-adjustable suspension, a locking rear differential, and skid plates. Traction control is not an option. The half-ton pickup can tow up to 10,000 pounds with an available trailer hitch, though tow hooks are standard.

Power comes from a 295-hp, 5.3-liter V8 and 4-speed automatic transmission, while the short and long arm front and solid live axle rear suspension take care of handling. This pickup is 230 inches long (ten more than the 5.8 SB), which means a longer 6.5-foot bed. It seats five in two rows, with the rear bench split-folding. Legroom tops out at 33.7 inches in the back, and access is through half-size reverse-hinged rear doors. The SLT upgrades standard features to include front power seats with driver's memory settings, heated front seats, leather upholstery, a trip computer, a 6-CD changer with MP3 jack, and wheel-mounted audio controls. Also on hand are full power features, including remote entry, cruise control, and heated extendable mirrors. A tachometer, compass, and temperature display sit on the dash. Intermittent wipers, a front power outlet, reverse-tilt side mirrors, and an auto-dimming function for all mirrors are also standard.

The lack of airbags may indicate why this pickup only gets three and four stars in crash tests. Standard safety equipment is limited to dual front airbags with passenger deactivation, front disc and rear drum brakes, four-wheel ABS brakes, a front stabilizer bar, foglights, mirrors with turn signals, autoamtic headlights, and halogen lamps. OnStar is optional. Other options include satellite radio, a sunroof, automatic climate control, and a manual sliding rear window. Also available is a 6.0-liter V8 that gets 345-hp, and a flex fuel version of the 5.3 V8.

Extended Cab 4WD 8 ft. LB

With the 2008 GMC Sierra 1500 SLT Extended 4WD LB, you get a longer 8-foot pickup bed (a result of the longer 149-inch length), and an on-demand 4WD system that can be driven both on and off-road, thanks to both high and low-range gearing. Accompanying the system is a locking center differential and 17-inch alloy wheels with all-season tires, but you might want to add the optional skid plates (less than 9 inches of ground clearance), driver-adjustable suspension, 20-inch wheels, and locking rear differential. A 5.3-liter V8 and 4-speed automatic are standard and offer up 295-hp and 335 ft-lbs of torque at 4000 RPM, with just under 10,000 pounds of towing capacity. It is available in flex fuel format. A 345-hp, 6.0-liter V8 is also optional. Fuel economy averages 16/20 mpg.

The bed in this half-ton pickup comes with tow hooks. A trailer hitch is optional, as is a manual sliding rear window into the cabin. Front bucket seats and a split-folding rear bench seat five, though rear passengers get less than 34 inches of legroom. There are four doors, but the rear ones are not full-sized and do not open separately. Moving up to the SLT gets you leather upholstery, heated power front seats with driver's memory settings, wheel-mounted cruise and audio controls, a 6-CD changer, reverse-tilt mirrors with turn signals, and a trip computer. Full power features are already standard, along with remote entry, leather trim, intermittent wipers, a front power outlet, heated extendable mirrors, tilt steering, and a compass and temperature display. Options add a sunroof, satellite radio, and automatic climate control.

Safety features are limited, and the 2006 Sierra 1500 SLT Extended 4WD gets average crash test ratings for this reason. Dual front airbags come with passenger sensors, but no side curtain bags. The front disc, rear drum, and 4-wheel ABS brakes feature electronic brakeforce distribution. The SLT adds an auto-dimming function to all mirrors inside and out. Automatic headlights, halogen lamps, and foglights help light the way. Giving drivers more comfort is the optional OnStar.

Extended Cab 5.8 ft. SB

The 2006 GMC Sierra 1500 SLT Extended Cab 5.8 represents a significant upgrade from the SLE trims. Though it runs on the same 295-hp, 16-valve V8 and 4-speed automatic, this rear-wheel drive pickup focuses as much on passenger comfort as on utility. The first noticeable difference is front bucket seats in place of the bench, reducing passenger load from six to five. The second row bench split-folds, and because the Extended Cab is not full-size, only offers 33.7 inches of legroom. The 134-inch wheelbase accommodates a 5.8-foot bed. Tow hooks are standard and a trailer hitch costs extra.

Significant upgrades to the standard equipment include power front seats with driver's memory settings, wheel-mounted and rear audio controls, a 6-CD changer with radio data, a trip computer, leather upholstery, and heated front seats. These join full power features, heated extendable mirrors, tilt and power steering, intermittent wipers, a temperature display and compass, remote entry, cruise control, a front power outlet, and new MP3 input jack. A sunroof, automatic climate control, and a manual rear window are optional.

On the safety side, the 2006 Sierra 1500 SLT Extended features side mirrors with turn signals, a reverse tilt function, and auto-dimming capability. The 17-inch wheels are now alloy and hold all-season tires. Dual front airbags, 4-wheel ABS brakes with electronic brakeforce distribution, and a front stabilizer bar earn three and four stars in crash tests. Also standard are automatic headlights, foglights, and an auto-dimming rearview mirror. Options add traction control, a locking rear differential, adjustable suspension, OnStar, and larger 20-inch wheels.

Extended Cab 6.5 ft. SB
Avg. Price: $15,042

With nearly ten more inches in overall length and wheelbase, the 2006 GMC Sierra 1500 SLT Extended Cab SB offers a longer 6.5-foot pickup bed. The interior seats five, with front bucket seats and a second row bench. The rear passenger doors are half-size and do not open independently of the front ones. As such, legroom is limited to under 34 inches for backseat passengers.

The rear-wheel drive pickup makes up for this with loads of standard features. Leather upholstery, heated front seats, power front seats with driver's memory settings, a trip computer, and both wheel-mounted and rear audio controls for the 6-CD changer and MP3 player are SLT upgrades. Already standard are leather trim, power windows, locks, and extendable heated mirrors, intermittent wipers, a security system, a compass and temperature display, and a front power outlet. The few options remaining include automatic climate control, a sunroof, and a manual rear window.

Under the hood of this family-size pickup is a 5.3-liter V8 that gets 295-hp and 335 ft-lbs of torque at 4000 RPM. With the 4-speed automatic, the powertrain gets 16/20 mpg and can tow up to 10,400 pounds with the optional trailer hitch. Two hooks cost extra. Dual front airbags include passenger airbag deactivation, and the 4-wheel ABS comes with electronic brakeforce distribution. Traction control is optional, but no side curtain airbags are available. In the lighting department, you'll find automatic headlights, halogen lamps, foglights, auto-dimming mirrors, and mirrors with turn signals. OnStar, an adjustable suspension, and a locking rear differential are available add-ons.

Extended Cab 8 ft. LB

The 2006 GMC Sierra 1500 SLT Extended Cab LB adds 19 inches to its length and 14 inches to its wheelbase, making room for an 8-foot bed on this rear-wheel drive pickup. The Extended moniker means it seats five in two rows (front bucket, rear bench) that both split-fold. It has four doors, but the rear ones are not full-size and are reverse-hinged. The SLT adds manual rear quarter windows, and a manual rear window opening onto the bed is optional. The bed comes with tow hooks, but can be outfitted with a trailer hitch. With the 295-hp, 5.3-liter V8 that delivers 335 ft-lbs of torque, the pickup can tow up to 8000 pounds. A 4-speed automatic is the only transmission. A flex fuel version of this engine is available.

Dressed up with a chrome grille and bumpers, the 2006 Sierra 1500 SLT Extended LB receives only average ratings in crash tests. Riding on a short and long arm front and solid live axle rear suspension, the SLT adds mirrors with turn signals, an auto-dimming function on all mirrors, and alloy wheels to the safety profile. This includes 17-inch wheels with all-season tires, dual front airbags, front disc and rear drum brakes, 4-wheel ABS with electronic brakeforce distribution, automatic headlights, foglights, halogen lamps, and reverse-tilt mirrors. You can boost the features by adding optional 20-inch wheels, an adjustable suspension, locking rear differential, and OnStar.

The SLT is the high-end trim of the bunch, barring the fully equipped Denali. Power front seats come with driver's memory settings. Other upgrades include wheel-mounted and backseat audio controls, a 6-CD changer with MP3 input, leather upholstery, heated seats, and a trip computer. These join the full power features, heated mirrors, remote entry, cruise control, intermittent wipers, a compass and temperature display, front power outlet, a security system, and tilt and power steering. A sunroof costs extra, as does satellite radio.

Work Truck
2 Dr Regular Cab 4WD 6.5 ft. SB
Avg. Price: $13,190

The 2006 GMC Sierra 1500 Work Truck Regular Cab 4WD SB features part-time four-wheel drive with a center locking differential and high and low-range gearing for off-road capability. Suggested options for such activity include skid plates and a locking rear differential. The standard powertrain is a 285-hp, 4.8-liter V8 with 295 ft-lbs of torque at 4000 RPM. It is paired with either a 4-speed automatic or 5-speed manual. Though the half-ton pickup comes with tow hooks, adding an available trailer hitch lets you tow up to 9100 pounds. For more power, try the 5.3-liter, 295-hp V8 with 335 ft-lbs of torque. This is also available as a flex fuel vehicle.

The two-door pickup seats up to three people in a front row bench, which can be replaced with bucket seats. The pickup bed on the SB (short base) trims extends 6.5 feet. The truck rides on a short and long arm front and solid live axle rear suspension, with 17-inch steel wheels and all-season tires. The front disc and rear drum brakes come with 4-wheel ABS and electronic brakeforce distribution. Dual front airbags, a front stabilizer bar, automatic headlights, and daytime running lights complete the safety profile. The Sierra 1500 Work Truck earns only three and four stars in crash tests.

Features are kept to a minimum. Air conditioning, a radio, a tachometer, intermittent wipers, a front power outlet, and vinyl seats are what you'd expect from a utility vehicle. You can dress things up a bit with optional power features, remote entry, a CD player, extendable mirrors, cruise control, cloth upholstery, and a manual sliding rear window. Other options include chrome bumpers, a snow plow kit, and a manual sliding rear window.

2 Dr Regular Cab 4WD 8 ft. LB
3 national listings
Avg. Price: $10,512

Adding the part-time 4WD system to the 2006 GMC Sierra 1500 Work Truck Regular Cab 4WD gets you a stronger 4.8-liter V8 engine and choice of 4-speed automatic or 5-speed manual. This powertrain delivers 285-hp and 295 ft-lbs of torque at 4000 RPM. A 5.3-liter, 295-hp V8 that gets 285 ft-lbs of torque is optional. The four-wheel drive features a center locking differential and both high and low-range gearing for off-road use, though you may want to add skid plates to cover the 8.7 inches of ground clearance. A locking rear differential is also available.

This half-ton, two-door Work Truck measures 224 inches and carries an 8-foot bed. Tow hooks are standard, and an optional trailer hitch allows for 8900 pounds of towing power. The cabin seats two or three in one row, depending on whether you choose the available bucket seats or standard split-folding bench. A radio, air conditioning, intermittent wipers, vinyl upholstery, a front power outlet, tilt steering, and a tachometer are the barebones features, but a long options list adds power windows, locks, and extendable mirrors. Also available are remote entry, cruise control, a CD player with MP3 jack, a manual sliding rear window, and premium cloth seats.

The 2006 Sierra 1500 Work Truck Regular Cab 4WD LB rides on 17-inch wheels with all-season tires. Dual front airbags comes standard, along with 4-wheel ABS brakes and electronic brakeforce distribution. There are no available side impact airbags. In keeping with its utilitarian function, one option offered only with the 4WD Work Truck trims is a snow plow preparation kit.

Extended Cab 4WD 6.5 ft. SB
Avg. Price: $15,519

The 2006 GMC Sierra 1500 Work Truck Extended Cab 4WD SB clocks in at 230 inches, with a 143-inch wheelbase and 8.7 inches of ground clearance. One more number -- a 6.5-foot pickup bed. This trim features part-time 4WD with a center locking differential and both high and low-range gearing for off-road use. Skid plates and a locking rear differential can be added for better off-road handling. The four-door pickup rides on a short and long arm front and solid live axle rear suspension, getting around on 17-inch wheels with all-season tires. The rear doors are not full-sized and open in tandem with the front doors. Two rows of split-folding benches seat up to six, with 33.7 inches of legroom in the back.

Under the hood is a 285-hp, 4.8-liter V8 that puts out 295 ft-lbs of torque at 4000 RPM. It is paired with a 4-speed automatic. Upgrading to the optional 5.3-liter V8 gives you 295-hp and 335 ft-lbs and a flex fuel option. Towing power maxes out at 8700 pounds with the optional trailer hitch. Tow hooks come standard. Other standard features on the Sierra 1500 Work Truck Extended 4WD include air conditioning, tilt and power steering, a tachometer, a radio, vinyl seats, and a front power outlet. A CD player, power features, a manual sliding rear window, chrome bumpers, cloth upholstery, extendable mirrors, remote entry, and cruise control all cost extra.

The 2006 Sierra 1500 Work Truck Extended 4WD SB earns three and four stars in crash tests. On the list of standard equipment are front disc and rear drum brakes, 4-wheel ABS with electronic brakeforce distribution, dual front airbags, automatic halogen headlights, and daytime running lights. Traction control is not offered as an option on four-wheel drive models.

Extended Cab 4WD 8 ft. LB

The LB in the 2006 GMC Sierra 1500 Work Truck Extended Cab 4WD LB signifies the 14 extra inches in the wheelbase, which makes room for a longer 8-foot pickup bed. The 4WD in its title refers to the part-time system that can be taken off-road, thanks to both high and low-range gearing. In the Work Truck, 17-inch wheels with all-season tires are standard, as is 8.7 inches of ground clearance. You may want to add the optional skid plates and locking rear differential. The longer bed also gets more power with the larger 5.3-liter V8 and 4-speed automatic (a flex fuel version is optional). These deliver 295-hp and 335 ft-lbs of torque, with 8500 pounds of towing capacity and 16/20 mpg. A 285-hp 4.8 V8 is also available. Tow hooks are standard, with the option to add a trailer hitch.

The pickup seats six in two rows of split-folding benches, though front bucket seats can be substituted. Rear legroom is cramped, and though it features four doors, the rear ones do not open separately from the front ones. A manual sliding rear window costs extra. Cupholders reside only up front, along with a power outlet. A radio, air conditioning, tilt and power steering, vinyl seats, intermittent wipers, and a tachometer are also standard. You can dress things up with the optional power windows, locks, and power extendable mirrors. Also available are a CD player, remote entry, cruise control, cloth seats, and chrome bumpers.

The front disc and rear drum brakes accompany 4-wheel ABS with electronic brakeforce distribution. Dual front airbags with passenger deactivation are standard, but side airbags not an option on the Sierra 1500. Automatic headlights, halogen lamps, and daytime running lights round out the lighting equipment. This pickup earns three and four stars in frontal impact tests and four in rollover tests.

Extended Cab 6.5 ft. SB
Avg. Price: $12,921

For those needing a bit more passenger room to their pickup, the 2006 GMC Sierra 1500 Work Truck Extended Cab SB adds 15 more inches to the length and wheelbase in order to add a second row split-folding bench seat. The bed remains the same length in the short-base trim (6.5 feet long), but now there are four doors. However, the rear doors are not full-sized and do not open separately from the front ones. Another drawback is the 33.7 inches of rear legroom. The rear-wheel drive truck seats six, though front bucket seats are available.

The Work Truck starts with a 195-hp, 4.3-liter V6 and choice of 5-speed manual or 4-speed automatic, which deliver 260 ft-lbs of torque at 2800 RPM and around 16/20 mpg. Adding an optional trailer hitch to the standard tow hooks allows up to 8000 pounds of towing. Substitute engines include a 285-hp, 4.8 V8 and a 295-hp, 5.3 V8. There are no added features with the Extended Cab. A radio, air conditioning, tilt and power steering, intermittent wipers, and a tachometer round out the standard equipment. There is also a front power outlet and two cupholders. On the safety side, the 2006 Sierra 1500 Work Truck Extended comes with dual front airbags with passenger deactivation, 4-wheel ABS brakes and electronic brakeforce distribution, and 17-inch wheels with all-season tires. Daytime running lights and automatic halogen headlights take care of lighting.

There are plenty of options to make the Work Truck more comfortable. These include power windows, locks, and extendable mirrors, remote entry, cruise control, and a CD player. A manual sliding rear window is available, along with chrome bumpers, a locking rear differential, and cloth seats to replace the standard vinyl ones.

Extended Cab 8 ft. LB
Avg. Price: $11,504

This particular rear-wheel drive pickup features an 8-foot bed and adds a second row for greater passenger capacity. The 2006 GMC Sierra 1500 Work Truck Extended Cab LB (Long Base) is a four-door model, though the rear doors reverse-open in conjunction with the front doors and rear legroom is a meager 33.7 inches. With two rows of split-folding benches, the Work Truck seats six. Front bucket seats are optional. The bed comes standard with tow hooks, but can be equipped with a trailer hitch for maximum towing capacity of 7800 pounds.

The extra interior space and longer bed are a result of 19 more inches in length and 14 inches in the wheelbase. The truck sits on a short and long arm front and solid live axle rear suspension. Getting the LB trim boosts engine power to a 5.3-liter V8 with 295-hp and 335 ft-lbs of torque at 4000 RPM. This engine is paired only with a 4-speed automatic. A flex fuel version is available, as is a 285-hp, 4.8 V8. Standard features are few, since this truck focuses on utility rather than comfort. A radio, intermittent wipers, tachometer, air conditioning, front power outlet, and tilt and power steering are the bare minimum, but you can add power features, cruise control, remote entry, a universal remote, extendable mirrors, and a CD player. If you want to dress up the exterior, chrome bumpers are also optional.

Dual front airbags feature passenger deactivation, but no side airbags are offered. The front disc and rear drum brakes come with 4-wheel ABS and electronic brakeforce distribution. The pickup earns three and four stars in frontal impact tests and four in rollovers. Automatic headlights and daytime running lights are also standard. Options add a locking rear differential and manual sliding rear window.

Regular Cab 6.5 ft. SB
Avg. Price: $9,381

Living up to its name, the 2006 GMC Sierra 1500 Work Truck Regular Cab is intended for functionality rather than personal comfort. The half-ton, rear-wheel drive pickup rides on a short and long arm front and solid live axle rear suspension, with a pickup bed measuring 6.5 feet in length. The two-door truck seats two or three in a front row split-folding bench. Standard powertrain consists of a 4.3-liter V6 and choice of 5-speed manual or 4-speed automatic transmission. These put out 195-hp and 260 ft-lbs of torque at a low 2800 RPM. Towing power reaches 8400 pounds with the optional trailer hitch. Tow hooks are standard. Also optional is a 285-hp 4.8 V8 or a 295-hp 5.3 V8 in both regular and flex fuel formats.

Earning only three and four stars in crash tests, the 2006 Sierra 1500 Work Truck Regular Cab comes equipped with dual front airbags, front disc and rear drum brakes, a front stabilizer bar, and four-wheel ABS brakes with electronic brakeforce distribution. The pickup rides on 17-inch steel wheels with all-season tires. Automatic headlights and daytime running lights are standard. A locking rear differential is available, but OnStar and traction control are not part of the options package for the Work Truck.

Driver-oriented features include a radio, air conditioning, intermittent wipers, a tachometer, front power outlet, two front cupholders, and tilt and power steering. More upscale features cost extra, such as cruise control, power windows, locks, and mirrors, extendable mirrors, remote entry, and a CD player. The standard vinyl seats can be replaced with cloth. Chrome bumpers are not standard on the Work Truck, as with the other trims, but are available.

Regular Cab 8 ft. LB
Avg. Price: $8,848

At 224 inches in length and with a 133-inch wheelbase, the 2006 GMC Sierra 1500 Work Truck Regular Cab LB carries a longer 8-foot cargo bed for more capacity and versatility. The two-door rear-wheel drive pickup resides in the half-ton division of the Sierra lineup. Power comes from a 195-hp, 4.3-liter V6 and 5-speed manual. They deliver 260 ft-lbs of torque and around 16/20 mpg. A 4-speed automatic is optional, as is a 4.8-liter, 285-hp V8 and a 5.3-liter, 295-hp V8. Tow hooks come standard with the bed, but the optional trailer hitch helps haul up to 8200 pounds.

Focused on function rather than form, the Sierra 1500 Work Truck LB comes minimally equipped with a radio, air conditioning, intermittent wipers, a front power outlet, a tachometer, and tilt and power steering. The front row bench is covered in vinyl and seats three people. It split-folds, but there is the option to substitute bucket seats. Other options add full power features, remote entry, extendable mirrors, cruise control, a CD/MP3 player, cloth seats, a manual sliding rear window, chrome bumper, and a locking rear differential.

Dual front airbags features passenger deactivation, while the front disc and rear drum brakes come with 4-wheel ABS and electronic brakeforce distribution. 17-inch wheels with all-season tires keep you on the road, along with the short and long arm front and solid live axle rear suspension. Automatic halogen headlamps and daytime running lights are also standard. Fully equipped, the pickup receives three and four stars in frontal impact tests.