GMC AT4 and AT4X Trim in Westborough, MA

Bold Exterior Styling

The GMC AT4 trim exudes confidence with its bold and athletic design, featuring striking details such as 18-inch gloss black wheels and signature red vertical recovery hooks. This trim embraces an adventurous spirit while retaining a sophisticated aesthetic, making it ideal for Westborough drivers who want a truck that performs as well as it looks.

The AT4X takes this design further with a redesigned front fascia and grille, creating a more aggressive and premium appearance. While both trims share an unmistakable GMC design language, the AT4X's exclusive styling cues set it apart as the more luxurious off-road-oriented option.

Unmatched Off-Road Capability

Both the AT4 and AT4X are engineered for off-road excellence, but each offers distinct capabilities to meet your needs: 

• GMC Sierra AT4: The AT4 is built to tackle challenging terrain with features like a two-inch suspension lift, off-road-tuned Rancho monotube shock absorbers, skid plates, and an automatic locking rear differential. Powered by a 3.0-liter Duramax Turbo-Diesel engine, it produces 277 horsepower and 460 pound-feet of torque, paired with a 10-speed automatic transmission for smooth and efficient performance.
 
• GMC Sierra AT4X: For those looking to push boundaries, the AT4X gives off-road capability new meaning. It's equipped with front and rear e-locking differentials, Multimatic DSSV spool-valve dampers, and specially tuned springs to enhance front and rear suspension travel. Its powerful 6.2-liter V8 engine delivers an impressive 420 horsepower and 460 pound-feet of torque, making it a force to be reckoned with on and off the road.