GMC Sierra Classic 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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2023 GMC Sierra 3500HD AT4 Crew Cab 4WD
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Expert Reviews Reviews from CarGurus experts.

2007 GMC Sierra Classic 3500
SL

When it comes to the GMC Sierra Classic 3500, we might as well say "we hardly knew ye." GMC follows the Chuck Taylor retro model by taking the same old school product and re-marketing...

2023 GMC Sierra 3500HD
AT4 Crew Cab 4WD
No Expert Reviews

Specs

2007 GMC Sierra Classic 3500
SL
2023 GMC Sierra 3500HD
AT4 Crew Cab 4WD
Powertrain 4-Speed Automatic
Drivetrain
RWD
4X4
4X4
Fuel Economy, City -- --
Fuel Economy, Highway -- --
Fuel Tank Volume 34 gal 36 gal
Engine
Fuel Type
Gasoline
Biodiesel
Gasoline
Power
300 hp @ 4,400 RPM
--
401 hp @ 5,200 RPM
Torque
360 lb-ft @ 4,000 RPM
--
464 lb-ft @ 4,000 RPM
Cylinders
8 cylinders
8 cylinders
8 cylinders
Compression Ratio
9.4:1
16:1
10.8:1
Displacement
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 3.86 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
Air Conditioning Standard Standard
CD Player Standard --
Cassette Player Optional --
Radio Standard Standard
Power Windows Optional Standard
Power Door Locks Optional Standard
Driver Power Seats -- Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 3 seats 5 seats
Front Legroom 41.3 in 44.5 in
Back Legroom -- 43.4 in
Payload and Towing
Cargo Volume -- --
Maximum Payload 4,658 lbs 4,365 lbs
Standard Towing Capacity 10,300 lbs 14,500 lbs
Maximum Towing Capacity 10,300 lbs 21,130 lbs
Exterior
Length 224.5 in 250.1 in
Width 79.7 in 81.9 in
Height 76.7 in 80.9 in
Wheelbase 133 in 158.9 in
Bed Length 97.6 in 82.2 in

Available Options

2007 GMC Sierra Classic 3500
SL
2023 GMC Sierra 3500HD
AT4 Crew Cab 4WD

Exterior Colors

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

Option Packages

  • Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible
  • 3 Years Of Onstar & Connected Services Plan
  • AT4 Preferred Package
  • AT4 Premium Plus Package
  • Assist Steps, Power-Retractable, Black
  • Driver Alert Package I
  • Driver Alert Package II
  • Gooseneck / 5TH Wheel Package
  • Gooseneck / 5TH Wheel Prep 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, 20" Machined Aluminum Bolt Pattern With High Gloss Black Accents
  • LPO, Auxiliary Trailer Camera, Wired
  • LPO, Body Color Wheel Arch Moldings
  • LPO, Cargo Convenience Package
  • LPO, Hard-Folding Tonneau Cover By Rev
  • LPO, MULTIPRO Audio System By Kicker
  • LPO, Off-Road High Clearance Step
  • LPO, Sport Step, Black
  • LPO, Tri-Fold Soft Tonneau Cover, By Advantage
  • Sunroof, Power
  • Technology Package
  • Gooseneck / 5TH Wheel Prep Package
  • Wheels, 20" (50.8 CM) Machined Aluminum

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