This 2021 GMC Sierra 2500HD AT4 represents serious truck capability paired with premium comfort and technology. The Duramax 6.6L V8 turbodiesel engine delivers the power and efficiency you need for work or adventure, while the 10-speed automatic transmission ensures smooth, responsive performance in any condition. Finished in black with a jet black and kalahari accents leather interior, this crew cab standard bed truck commands attention and offers refined appointments throughout.
- Duramax 6.6L V8 turbodiesel engine with 220-amp alternator
- Gooseneck/5th wheel package for serious towing capability
- Power-retractable black assist steps
- Heated and ventilated front bucket seats with leather trim
- AT4 premium plus package with off-road suspension
- 10-way power driver and passenger seats with lumbar support
- Multicolor 15 head-up display with wireless phone projection
- HD surround vision and rear cross traffic alert
- Engine block heater and trailer tire pressure monitor sensors
- 4-wheel drive with 2-speed active transfer case
Built for those who demand a truck that works as hard as they do, this Sierra 2500HD combines capability with everyday comfort. The AT4 package adds genuine off-road credentials with advanced suspension and protective details. Visit us today to experience the power, technology, and luxury that make this heavy-duty truck stand out from the rest.
Used 2021 GMCSierra 2500 HD AT4
- Diesel
Disclaimer: The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
1Dealer Discount applied to everyone






