GMC Sierra AT4x Model Lineup

January 29th, 2024 by


  • 3.0L Duramax® Turbo-Diesel Engine with 10-Speed Automatic Transmission
  • 13.4″ Diagonal Center Touchscreen and 12.3″ Diagonal Driver Information Center
  • 2″ Factory Lift with Off-Road Suspension and Rancho Monotube Shocks
  • Unique Jet Black Interior with Kalahari Accents and Heated and Ventilated Perforated Front Leather Seating Surfaces
  • Two-speed Autotrac Transfer Case, Automatic Locking Rear Differential and Underbody Skid Plates
  • Available CarbonPro Composite Bed


  • 3.0L Duramax Turbo-Diesel Engine with 10-Speed Automatic Transmission
  • Multimatic DSSV Dampers
  • Front and Rear Electronic Locking — a Combination Not Offered on Any Competitor in its Class
  • 12-Speaker Bose Premium Series with Centerpoint Surround Sound
  • AEV Stamped-Steel Front Bumper with Front Winch Capability
  • AEV Stamped Boron Steel Front Approach Skid Plate



The new peak of premium off-roading


AT4 offers powerful capability engineered to take on off-road obstacles and the tough backcountry

  • Factory-installed 2″ suspension lift
  • Two-speed AutoTrac transfer case, automatic locking rear differential and skid plates
  • Off-road-tuned Rancho monotube shock absorbers


AT4X takes off-road capability to the next level with serious suspension equipment that’s engineered for adventure

  • Multimatic DSSV dampers featuring three separate spool valves to control damping and three connected chambers for fluid flow
  • Uniquely tuned springs and increased front and rear suspension travel
  • Specific off-road chassis and tuning
  • Front and rear electronic locking differentials, which assure both wheels will spin together regardless of the amount of resistance to help keep traction in the rough backcountry, a combination not offered on any competitor in its class


Available modes include:

  • Tour
  • Sport
  • Terrain
  • Tow/Haul
  • Off-Road
  • Off0Road-tuned Rancho monotube shock absorbers


Both Sierra AT4 and AT4X come with Hill Descent Control, an antilock braking feature engineered to help provide a smooth, controlled, descent on steep inclines



Standard on AT4 & AT4X

The world’s first six-function GMC MutiPro Tailgate helps improve loading, unloading and accessing the cargo box.

  • Open and close the primary gate using the key fob’s power release
  • Load stop to help prevent items from sliding out of the bed
  • The opened inner gate provides a work surface as well as second-tier loading
  • Take music outdoors with the available integrated MultiPro Audio System by KICKER
  • Fold-down inner gate for easy access when loading and unloading
  • Inner gate can fold into a full-width step, capable of holding up to 375 lbs.
  • Inner gate load stop to help prevent second-tier items from sliding out of the bed
  • Inner gate can be disabled to prevent it from being opened when a hitch or other equipment is installed



An uncompromisingly premium interior


Heated and ventilated front driver and passenger perforated-leather seating surfaces in Jet Black with Kalahari interior and AT4 accents

  • Premium front and rear floor liners with removable carpet inserts
  • Heated and ventilated front perforated leather seating surfaces
  • Rear seatback and under-seat storage
  • Wrapped heated steering wheel
  • Bose Premium Sound System with Richbass woofer


AT4X features a luxurious, athletic and purposeful interior designed to let you explore beyond the boundaries in ultra-premium style and comfort.

  • Refined Obsidian Rush interior with full-grain leather seats featuring red and white double-needle stitching and technical-grained leather accents
  • Premium-leather trimmed instrument panel and door panels accented with black-finished Authentic Vanta Ash wood trim
  • Premium microsuede headliner, sun visors and pillars
  • 12-speaker Bose Premium Series with Centerpoint surround sound
  • Best-in-class 16-way power heated and ventilated front driver and passenger seats with massage feature



Unrivaled tech for a smart driving experience


Standard on AT4x. Available on AT4.
The multicolor 15″ diagonal Head-Up Display projects the following key information directly onto your windshield:

  • Speed
  • Tachometer
  • Mobile Alerts
  • Available Navigation
  • Forward Collision Alert
  • Lane Departure Warning
  • Cruise Control


Standard on AT4x. Available on AT4.
Wireless phone projection allows you to connect your compatible smartphone to access a more integrated in-vehicle experience with Android Auto† and Apple CarPlay† compatibility. And with Google built-in† compatibility, you can personalize your in-vehicle entertainment with ease. Access features such as:

  • Apple Music
  • Apple Maps
  • Siri to send and receive hands-free text messages
  • Google Assistant
  • Google Maps
  • Google Play


Go forth with added confidence


Standard on AT4x. Available on AT4.
When attempting to park, the Front and Rear Park Assist† feature can provide distance alerts to nearby detected objects in front of or behind your pickup to help you park and avoid collisions at low speeds.


Standard on AT4x. Available on AT4.

  • Automatic Emergency Braking
  • Following Distance Indicator
  • Forward Collision Alert
  • Front Pedestrian Braking
  • IntelliBeam, auto high beams
  • Lane Keep Assist with Lane Departure Warning

Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Visibility, weather and road conditions may affect feature performance. Read the vehicle Owner’s Manual for more important feature limitations and information


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