The 2026 GMC Sierra 2500 HD drops 2WD from all trims except the base Pro, kills Amazon Alexa in favor of an all-Google infotainment platform with eight years of connected services, and makes the MultiPro tailgate an opt-in (still free) rather than standard on the SLT. The AT4X and its AEV Edition continue to push the heavy-duty overlanding envelope with Multimatic DSSV dampers and stamped steel armor, while the Denali Ultimate doubles down on the luxury-meets-capability formula—16-way massage seats in a truck that tows 18,500 lbs. The new colors, Coastal Dune and Glacier White Tricoat, round out a lineup that’s increasingly specialized and opinionated about what each trim should be.

Tags: trim levels
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