The 2026 GMC Sierra 2500 HD AT4 Crew Cab in Summit White features a 6.6L Duramax turbo-diesel V8 engine paired with four-wheel drive, delivering robust capability for demanding tasks. This model's 159-inch crew cab and standard bed offer a balanced combination of passenger comfort and cargo flexibility suited for heavy-duty work or recreational use. Inside, the jet black interior with Kalahari accents is enhanced by perforated leather-appointed front seats, providing a premium feel and comfortable support. Technology is well-integrated through a multicolor 15-inch diagonal head-up display that keeps essential information easily visible, promoting safer driving. Safety is a priority with advanced driver assistance features including Forward Collision Alert, Automatic Emergency Braking, Front Pedestrian Braking, and Lane Departure Warning. IntelliBeam automatic high beams and Hill Descent Control add convenience and control in varying conditions. For towing, the Sierra 2500 HD includes Hitch Guidance with Hitch View and the In-Vehicle Trailering System app, simplifying trailer hookup and monitoring. This truck is designed to offer strength, intelligence, and safety in a well-appointed package that meets the needs of serious truck users.
