GMC Sierra 2500HD vs Chevrolet Silverado 3500HD Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

Select a car to compare

Cancel
Change
2021 GMC Sierra 2500HD AT4 Crew Cab 4WD
Photo of 2020 model year shown

Select a car to compare

Cancel
Change

Select a car to compare

Cancel
+

Specs

2021 GMC Sierra 2500HD
AT4 Crew Cab 4WD
2021 Chevrolet Silverado 3500HD
High Country Crew Cab 4WD
Powertrain
Drivetrain
4X4
4X4
4X4
4X4
Fuel Economy, City -- --
Fuel Economy, Highway -- --
Fuel Tank Volume 36 gal 36 gal
Engine
Fuel Type
Biodiesel
Gasoline
Biodiesel
Gasoline
Power
--
401 hp @ 5,200 RPM
--
401 hp @ 5,200 RPM
Torque
--
464 lb-ft @ 4,000 RPM
--
464 lb-ft @ 4,000 RPM
Cylinders
8 cylinders
8 cylinders
8 cylinders
8 cylinders
Compression Ratio
16:1
10.8:1
16:1
10.8:1
Displacement
6,600 cc
6,600 cc
6,600 cc
6,600 cc
Bore x Stroke
4.06 in x 3.9 in
4.06 in x 3.86 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 Standard
Curtain Airbags Standard Standard
Comfort and Convenience
Air Conditioning Standard Standard
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Standard Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 5 seats 5 seats
Front Legroom 44.5 in 44.5 in
Back Legroom 43.4 in 43.4 in
Payload and Towing
Cargo Volume -- --
Maximum Payload 3,760 lbs 4,365 lbs
Standard Towing Capacity 14,500 lbs 14,500 lbs
Maximum Towing Capacity 18,500 lbs 21,030 lbs
Exterior
Length 250.1 in 250 in
Width 81.9 in 81.9 in
Height 79.8 in 80.9 in
Wheelbase 158.9 in 158.9 in
Bed Length 82.2 in 82.2 in

Available Options

2021 GMC Sierra 2500HD
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
  • LPO, Bedside Storage Boxes
  • LPO, Body Color Wheel Arch Moldings
  • LPO, Cargo Convenience Package
  • LPO, Sport Step, Black
  • LPO, Tri-Fold Hard Tonneau Cover
  • LPO, Tri-Fold Soft Tonneau Cover
  • MULTIPRO Audio System By Kicker
  • Sunroof, Power
  • Technology Package
  • Wheels, 20" (50.8 CM) Machined Aluminum
2021 Chevrolet Silverado 3500HD
High Country Crew Cab 4WD

Exterior Colors

  • Black
  • Cherry Red Tintcoat
  • Iridescent Pearl Tricoat
  • Mosaic Black Metallic
  • NORTHSKY Blue Metallic
  • Oxford Brown Metallic
  • Silver Ice Metallic
  • Summit White

Option Packages

  • Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible
  • Assist Steps, Power-Retractable, With Bright Trim
  • Gooseneck / 5TH Wheel Prep Package
  • High Country Deluxe
  • LPO, 20" (50.8 CM) Aluminum High Gloss Black With Machined Finish Wheels
  • LPO, 20" (50.8 CM) Chrome Aluminum Wheels
  • LPO, 20" (50.8 CM) High Gloss Black Aluminum Wheels
  • LPO, Auxiliary Trailer Camera, Wired
  • LPO, Bedside Storage Boxes
  • LPO, Tri-Fold Hard Tonneau Cover
  • LPO, Tri-Fold Soft Tonneau Cover
  • Safety Package II
  • Technology Package
  • Sunroof, Power on Crew Cab Models

Related Comparisons