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

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

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2021 GMC Sierra 2500HD
AT4 Crew Cab 4WD
MSRP
$58,400
Invoice
$54,662
Average Price Paid
$56,582
623 listings nationwide

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2021 GMC Sierra 2500HD
AT4 Crew Cab 4WD
No Data Available

Specs

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

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