Due to current supply-chain shortages, certain features shown have limited or late availability, or are no longer available. See the window label or a dealer regarding the features on an individual vehicle.
ASSERT YOUR DOMINANCE
Engineered for the bold, the monstrous exterior of the Sierra Heavy Duty was built big so you can tow big.
WORLD’S FIRST
SIX-FUNCTION MULTIPRO TAILGATE
The available GMC MultiPro Tailgate† offers six distinct functions designed to help improve loading, unloading and accessing the cargo box.
PREMIUM DENALI FEATURES
*To avoid the risk of injury, never use Recovery Hooks to tow a vehicle. For more information, see the Recovery Hooks section of your Owner's Manual.
CAPABILITY THAT CONQUERS
The Sierra AT4 pairs powerful performance with a bold, athletic look, delivered by way of distinctive finishes and modern, precise detailing.
*To avoid the risk of injury, never use Recovery Hooks to tow a vehicle. For more information, see the Recovery Hooks section of your Owner's Manual.
SIERRA HD WHEELS
Each Sierra Heavy Duty model comes equipped with an impressive set of standard and available head-turning wheels.
SIERRA HD
ACCESSORY WHEELS
CARGO BED INNOVATIONS

BEST-IN-CLASS HEAVY DUTY CARGO BED VOLUME†
- Roll-formed high-strength steel bed
- Best-in-class heavy-duty cargo box volume
- Standard Bed: 69.5 cu. ft.
- Long Bed: 83.5 cu. ft.
- 12 cargo tie-downs (500-lb. rating per corner)
- LED Lighting
- Available durable spray-on bedliner

CORNERSTEP REAR BUMPER†
Due to current supply-chain shortages, certain features shown have limited or late availability, or are no longer available. See the window label or a dealer regarding the features on an individual vehicle.