2021 2021 SIERRA AT4

2021 Sierra 1500 AT4

denali sierra AT4

Starting at


Max Horsepower

420 HP²

Max Torque

460 LB.-FT.³

Tow Up to

9,200 LBS⁴

sierra AT4 Features

2021 Sierra 1500 AT4 - performance

Extraordinary Performance

  • Efficient, responsive and powerful — get familiar with Sierra 1500’s dynamic Duramax® 3.0L Turbo-Diesel engine and 6.2L V8 gas engine.
2021 Sierra 1500 AT4 - technology

Tech That Takes You Further

  • The available 15″ diagonal Head-Up Display conveniently projects key information directly onto the windshield, and available camera views⁵ optimize the view around the truck and compatible trailers.
2021 Sierra 1500 AT4 - exterior details

Distinguished Details

  • A high, confident stance and bold grille finished in black chrome add sophistication to Sierra AT4’s capable off-road ability.
2021 Sierra 1500 AT4 - interior

Athletic, Purposeful Interior

  • Designed for your active lifestyle with exclusive darkened trim and decor, leather appointment and smart storage.

¹The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

² Requires available 6.2L V-8 engine.

³ Requires available 6.2L V-8 engine.

⁴ Requires Crew Cab short box with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

⁵Some camera views require available accessory camera and installation. Not compatible with all trailers. See your dealer for details. Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Visibility, weather, and road conditions may affect feature performance. Read the vehicle’s owner’s manual for more important feature limitations and information.