The 2025 Sierra 2500HD AT4 delivers heavy-duty capability with off-road upgrades and a refined cabin. Finished in a deep Volcanic Red Tintcoat, this AT4 combines rugged design, advanced towing tech, and premium materials throughout the interior.

Performance & Engine

  • 6.6L V8 engine

  • 10-speed automatic transmission

  • Off-road tuned suspension

  • Two-speed Autotrac transfer case

  • Skid plates and hill descent control

  • Factory tow package with integrated trailer brake controller

Exterior

  • Volcanic Red Tintcoat exterior

  • AT4 exclusive grille and blacked-out trim

  • 18-inch AT4 wheels with all-terrain tires

  • Off-road side steps

  • LED headlights and signature C-shape daytime running lights

  • Factory AT4 front red recovery hooks

  • Spray-in bedliner with bed tie-downs

  • Power-extendable trailer tow mirrors

Interior

  • Jet Black interior with Kalahari accents

  • Premium leather seats

  • Large infotainment display with navigation

  • Digital driver information center

  • Heated front seats and heated steering wheel

  • Dual-zone climate control

  • Premium AT4 embroidered center console

  • Rear seats with fold-flat storage

  • Wireless Apple CarPlay and Android Auto

Features & Tech

  • 360-degree camera system

  • Parking sensors

  • Remote start

  • Keyless entry and push-button start

  • Bose premium sound system

  • Multiple USB ports + wireless charging pad

  • Trailer tow view modes

  • Driver-assist safety suite (lane assist, collision alert, etc.)