2006 GMC Sierra 1500 SL1 4 Dr 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.