2025 GMC Sierra 1500 AT4X Trim Overview

You’ll be able to get ahead to the competition in Gillette with the power of the Sierra 1500 AT4X’s Duramax 3.0L Turbo-Diesel engine. This motor outputs 305 horsepower and 495 lb.-ft. of torque, while also bringing a 8,800-lb. maximum towing capacity¹ to the equation for your hauling endeavors. You’ll also have the option of upgrading to a 6.2L EcoTec3 V8 engine with 420 horsepower and 460 lb.-ft. of torque that has access to a 9,900-lb. Maximum towing capacity¹. Regardless of your preference, both options come tied to a 10-speed automatic transmission that’ll keep travels smooth, while the front and rear electronic locking differentials help stabilize performance in challenging situations.

Many eyes will be drawn your way when you pull up to McManamen Park with your 2025 GMC Sierra 1500 AT4X. This will largely be due to the rugged 33-inch Goodyear® Wrangler Territory mud terrain tires and 18-inch painted aluminum wheels with dark painted pockets that this full-size pickup truck can sport. You can also expect to get compliments for the chrome front grille that has a high-gloss black header, insert bars with gloss-black accents, and red recovery hooks² that offer both form and function. Finally, the six-function GMC MultiPro Tailgate makes accessing the cargo space simple, and the high-strength steel cargo bed includes a spray-on bedliner and GMC logo for a touch of elegance.

If you and your copilot have a lengthy trip up Route 14 ahead of you, then you’ll be able to kick back and relax in the 16-way power heated and ventilated front seats that come with their own massage feature. The fact that these are full-grain leather seats featuring red and white double-needle stitching and technical-grained leather accents also has to be mentioned, as they come as part of the Refined Obsidian Rush interior design. To add to that, the premium-leather trimmed instrument panel pairs seamlessly with the door panels that have accents with a black-finished Authentic Vanta Ash wood trim. It’s accurate to declare that you’ll feel right at home in the interior of the 2025 GMC Sierra 1500 AT4X, and we’d love for you to come give it a try here at Sheridan Motors GMC!