Chevrolet Silverado 3500 vs GMC Sierra 3500HD Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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2021 GMC Sierra 3500HD AT4 Crew Cab 4WD
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Used Car Pricing Used listing price comparison and analysis.

2006 Chevrolet Silverado 3500
1LT Crew Cab LB 4WD
CarGurus Instant Market Value
$16,496
3 listings nationwide

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2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
CarGurus Instant Market Value
$76,693

Expert Reviews Reviews from CarGurus experts.

2006 Chevrolet Silverado 3500
1LT Crew Cab LB 4WD

In its final year before fading into history as the Silverado 3500 Classic, the domestic pickup got a stronger engine, available 6 speed automatic transmission, and a re-shuffled set o...

2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
No Expert Reviews

User Reviews Reviews from CarGurus users who have driven or owned the car.

2006 Chevrolet Silverado 3500
1LT Crew Cab LB 4WD
20
Rodney writes:
Awesome truck horse power for days
Bear356 writes:
The Silverado is a good truck but I feel the dodge is going to retain its value and last longer
15
will writes:
drives smoother
2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
No User Reviews

Specs

2006 Chevrolet Silverado 3500
1LT Crew Cab LB 4WD
2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD
Powertrain
Drivetrain
4WD
4WD
4WD
4WD
4WD
4WD
4X4
4X4
Fuel Economy, City -- --
Fuel Economy, Highway -- --
Fuel Tank Volume 34 gal 36 gal
Engine
Fuel Type
Gasoline
Gasoline
Diesel
Diesel
Gasoline
Gasoline
Biodiesel
Gasoline
Power
300 hp @ 4,400 RPM
--
--
--
--
300 hp @ 4,400 RPM
--
401 hp @ 5,200 RPM
Torque
360 lb-ft @ 4,000 RPM
--
--
--
--
360 lb-ft @ 4,000 RPM
--
464 lb-ft @ 4,000 RPM
Cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
Compression Ratio
9.4:1
--
--
--
--
9.4:1
16:1
10.8:1
Displacement
6,000 cc
8,100 cc
6,600 cc
6,600 cc
8,100 cc
6,000 cc
6,600 cc
6,600 cc
Bore x Stroke
4 in x 3.62 in
--
4.06 in x 3.9 in
4.06 in x 3.9 in
--
4 in x 3.62 in
4.06 in x 3.9 in
4.06 in x 3.86 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags -- Standard
Curtain Airbags -- Standard
NHTSA Crash Test Results
Front Driver 4 stars --
Front Passenger 3 stars --
Rollover (pre-2011) 4 stars --
Comfort and Convenience
Leather Seats Optional --
Air Conditioning Standard Standard
CD Player Standard --
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Optional Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 6 seats 5 seats
Front Legroom 41.3 in 44.5 in
Back Legroom 39.1 in 43.4 in
Payload and Towing
Cargo Volume -- --
Standard Payload 3,578 lbs --
Maximum Payload 3,578 lbs 4,365 lbs
Standard Towing Capacity 12,000 lbs 14,500 lbs
Maximum Towing Capacity 15,000 lbs 21,300 lbs
Exterior
Length 258.5 in 250.1 in
Width 79.7 in 81.9 in
Height 77.3 in 80.9 in
Wheelbase 167 in 158.9 in
Bed Length 97.6 in 82.2 in

Available Options

2006 Chevrolet Silverado 3500
1LT Crew Cab LB 4WD
2021 GMC Sierra 3500HD
AT4 Crew Cab 4WD

Exterior Colors

  • Brownstone Metallic
  • Cayenne Red Tintcoat
  • Ebony Twilight Metallic
  • Onyx Black
  • Pacific Blue Metallic
  • Summit White

Option Packages

  • Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible
  • AT4 Preferred Package
  • AT4 Premium Plus Package
  • Driver Alert Package I
  • Driver Alert Package II
  • Gooseneck / 5TH Wheel Package
  • LPO, 20" (50.8 CM) High Gloss Black Aluminum Wheels With Machined Accents
  • LPO, 20" (50.8 CM) High Gloss Black Painted Wheels
  • LPO, AT4 High Clearance Step
  • LPO, Auxiliary Trailer Camera, Wired
  • LPO, Bedside Storage Boxes
  • LPO, Body Color Wheel Arch Moldings
  • LPO, Cargo Convenience Package
  • LPO, Sport Step, Black
  • LPO, Tri-Fold Soft Tonneau Cover
  • MULTIPRO Audio System By Kicker
  • Sunroof, Power
  • Technology Package
  • Wheels, 20" (50.8 CM) Machined Aluminum

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