2022 GMC Sierra 1500 AT4 4x4 Crew Cab 6.6 ft. box

Diesel performance & efficiency

• 3.0L Duramax turbo-diesel inline-6: 277 hp and 460 lb-ft torque paired with a 10-speed automatic.

• Strong towing for a half-ton: up to 9,000–9,100 lb towing and 1,380 lb payload.

• Excellent fuel economy for a full-size truck: about 20/23 MPG city/highway (21 combined).

• Long driving range of roughly 480–550 miles per tank.

👉 Big highlight: it blends torque-rich towing power with diesel efficiency — rare in a full-size off-road truck.

AT4 off-road capability

The AT4 is the factory off-road trim:

• 2-inch factory suspension lift and off-road tuned suspension.

• Two-speed transfer case, hill descent control, and auto-locking rear differential.

• Skid plates, red recovery hooks, mud-terrain tires.

• Standard 4WD and heavy-duty electrical/charging system for towing and off-road use.

This makes it one of the most capable off-road half-ton diesels available.

Trailering & work tech

• ProGrade Trailering System with in-vehicle trailering app.

• Hitch Guidance with Hitch View and integrated trailer brake controller.

• Tow/haul mode with grade braking for safer downhill towing.

These features make towing easier for beginners and pros alike.

Premium interior comfort

AT4 mixes rugged with luxury:

• Heated & ventilated front seats with power adjustments and memory.

• Leather interior and massaging front seats available.

• Large crew-cab interior with generous rear legroom.

It’s designed to be both a daily driver and adventure truck.

Infotainment & connectivity

• GMC Premium Infotainment System with 8-inch touchscreen.

• Wireless Apple CarPlay & Android Auto.

• Voice recognition, Bluetooth streaming, SiriusXM, and connected apps.

Safety & driver assistance

• Lane departure warning, lane keep assist, and forward collision prevention.

• Modern driver-assist features designed for highway and towing safety.

Bottom line

The 2022 Sierra AT4 Duramax stands out for combining:

• Diesel fuel economy

• Real off-road hardware

• Strong towing tech

• Premium comfort and tech

It’s one of the most balanced adventure + daily-driver half-ton trucks you can get.

Diesel performance & efficiency

• 3.0L Duramax turbo-diesel inline-6: 277 hp and 460 lb-ft torque paired with a 10-speed automatic.

• Strong towing for a half-ton: up to 9,000–9,100 lb towing and 1,380 lb payload.

• Excellent fuel economy for a full-size truck: about 20/23