2021 GMC Sierra 2500HD AT4
Specifications, live market data, colors, and factory features.
117 for sale right now
$31,711 – $67,990
Specifications
Performance
- Engine
- 6.6L 8-Cylinder L8T - SIDI, VVT, CAST IRON
- Horsepower
- 401 hp
- Torque
- 464 lb-ft
- Transmission
- 6-Speed Automatic
- Drivetrain
- 4WD
Fuel & Efficiency
- Fuel
- Gasoline
- MPG City
- 0 mpg
- MPG Highway
- 0 mpg
- Fuel Tank
- 36 gal
Dimensions
- Length
- 266.1″
- Width
- 81.9″
- Height
- 79.7″
- Wheelbase
- 172″
- Curb Weight
- 6,950 lbs
Body & Practicality
- Body Style
- Truck
- Doors
- 4
- Seating
- 5
- Base MSRP
- $58,600
Colors
Factory colors on 2021 GMC Sierra 2500HD AT4s for sale now.
Exterior
- Summit White(white)24
- Onyx Black(black)19
- Cayenne Red Tintcoat(red)6
- Ebony Twilight Metallic(black)5
- Pacific Blue Metallic(blue)3
- Black3
- White2
- Brown1
- [GAZ] Summit White(white)1
- BLACK1
Interior
- Jet Black w/Kalahari Accents(black)40
- Jet Black(black)15
- Jet Black With Kalahari Accents(black)3
- Jet Black with Kalahari Accents(black)2
- BLACK2
- Black1
- Jet Black W/Kalahari Acce(black)1
- Jet Black With Kalahari Accent(black)1
Live Market Data
Computed from active 2021 GMC Sierra 2500HD AT4 listings nationwide, updated continuously.
Price Distribution
Price vs. Mileage
Latest AT4 Listings
The newest 2021 GMC Sierra 2500HD AT4s on the market.
Used 2021 GMC Sierra 2500HD
$53,728
Est. $779/mo*
Sam Boswell Buick GMC Mt. Dora
Used 2021 GMC Sierra 2500HD
$48,567
Est. $705/mo*
Howard Bentley Buick GMC
Used 2021 GMC Sierra 2500HD
$41,424
Est. $604/mo*
Saia Auto Consultants
Used 2021 GMC Sierra 2500HD
$54,688
Est. $793/mo*
Joe Bowman Auto Plaza
Used 2021 GMC Sierra 2500HD
$48,372
Est. $703/mo*
Laura Buick GMC
Used 2021 GMC Sierra 2500HD
$50,383
Est. $731/mo*
Abeloff Nissan
Used 2021 GMC Sierra 2500HD
$53,457
Est. $775/mo*
Lugoff Nissan
Used 2021 GMC Sierra 2500HD
$53,895
Est. $781/mo*
Koons Tysons Chrysler Dodge Jeep RAM
What's Yours
Worth?
The median 2021 GMC Sierra 2500HD AT4 lists for $50,793 today.
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GMC Sierra 2500HD AT4
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