2025 GMC SIERRA HEAVY DUTY

AT4 & AT4X

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AT4 STARTING AT:

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AVAILABLE TOW UP TO

9,661 KG (21,300 LBS.)

KEY FEATURES

EXCLUSIVE ON AT4X

FACTORY-INSTALLED 1.5" SUSPENSION LIFT

EXCLUSIVE ON AT4X

MULTIMATIC DSSV DAMPERS

STANDARD ON AT4

OFF-ROAD SUSPENSION WITH RANCHO® SHOCKS

EXCLUSIVE ON AT4X

35" GOODYEAR® TERRITORY MT TIRES

EXCLUSIVE ON AT4X

OBSIDIAN RUSH INTERIOR WITH FULL-GRAIN LEATHER SEATING

STANDARD ON AT4

13.4" DIAGONAL TOUCHSCREEN IS THE LARGEST IN ITS CLASS

EXPLORE GMC SIERRA HD AT4 & AT4X TRIMS

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AT4 

STARTING AT:

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AVAILABLE TOW UP TO 9,661 KG (21,300 LBS.)

KEY FEATURES:

  • Exclusive Jet Black interior with Kalahari accents, and heated and ventilated perforated front leather seating surfaces
  • Exclusive 20" gloss-black aluminum wheels with available BFGoodrich® off-road tires
  • Off-Road Suspension Package with twin-tube Rancho shocks and skid plates
  • Up to 14 available camera views with HD Surround Vision
  • Adaptive Cruise Control

AVAILABLE FEATURES 

  • 15" diagonal Head-Up Display with off-road inclinometer

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AT4X

STARTING AT:

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AVAILABLE TOW UP TO 8,391 KG (18,500 LBS.)

KEY FEATURES:

  • Factory-installed 1.5" suspension lift, Multimatic® DSSV dampers, rear electronic-locking differential, larger steel transfer case skid plate and front aluminum skid plate
  • 35" Goodyear Territory MT tires
  • 16-way heated and ventilated power front seats with massage feature
  • Obsidian Rush interior featuring full-grain leather seating with technical-grain leather accents and authentic Vanta Ash wood

AVAILABLE FEATURES 

  • AT4X AEV Edition featuring stamped steel bumpers, stamped steel skid plates, and 18" Salta gloss-black wheels
  • Duramax® 6.6L Turbo-Diesel V8 engine with Allison® 10-speed automatic transmission