This impressive 2025 GMC Sierra 2500HD AT4 delivers premium capability and refinement in a crew cab design. Finished in white with jet black leather accents, this diesel-powered truck combines rugged functionality with modern luxury, backed by a Duramax 6.6L V8 turbodiesel engine and 10-speed automatic transmission for commanding performance whether on or off the road.- Duramax 6.6L V8 turbodiesel engine with 220-amp alternator- Gooseneck/5th wheel prep package with hitch platform- Advanced safety suite including automatic emergency braking, lane departure warning, and surrounding view cameras- Heated and ventilated leather front seats with power adjustments- Premium Bose 7-speaker sound system with wireless phone projection and Apple CarPlay/Android Auto- 15-inch multicolor head-up display and automatic high-beam headlights- X31 off-road package with 2-speed active transfer case and hill descent control- Heated steering wheel and power sunroof- 20-inch high-gloss black aluminum wheels with spray-on bedliner- SiriusXM satellite radio with 360L trial subscriptionThis AT4 showcases the perfect balance of work truck capability and luxury features, ideal for owners who demand both performance and comfort. With comprehensive technology, safety innovations, and towing preparation, this Sierra is ready for any mission. We invite you to experience this outstanding truck firsthand—visit our showroom today.