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This 2026 GMC Sierra 2500HD AT4 delivers premium capability wrapped in a striking silver exterior. Powered by a Duramax 6.6L V8 turbodiesel engine paired with a 10-speed automatic transmission, this crew cab standard bed truck combines commanding performance with refined comfort. The jet black leather interior with Kalahari accents creates an upscale driving environment, while the 4WD drivetrain ensures confidence on any terrain.
- Duramax 6.6L V8 turbodiesel engine with 220-amp alternator
- 10-speed automatic transmission with 2-speed active transfer case
- Heated and ventilated leather front seats with 10-way power adjustment
- Bose premium 7-speaker sound system with Apple CarPlay and Android Auto
- HD surround vision with multiple camera systems and trailer view provisions
- Off-road suspension with hill descent control and exhaust brake
- Spray-on pickup bedliner with GMC logo and 120-volt bed power outlet
- Wireless phone projection and wireless charging
- Remote vehicle starter with push button start and keyless entry
- Automatic emergency braking with trailer side blind zone alert
The AT4 trim emphasizes adventure and durability, featuring an off-road suspension package, gloss black grille styling, and all-terrain capability. Advanced safety systems including automatic emergency braking, lane departure warning, and rear cross-traffic alert work together to protect you and your passengers. Premium technology features like the GMC Infotainment System with SiriusXM satellite radio and OnStar connectivity keep you connected while you drive.
With just over 5,200 miles, this Sierra proves ready for work and weekend getaways alike. Experience the confidence of GMC engineering and the sophistication of the AT4 package. Visit us today to test drive this exceptional truck.