2026
GMC SIERRA 1500 AT4 4X4 CREW CAB 5.75 FT. BOX

The 2026 GMC Sierra 1500 AT4 Crew Cab Short Box 4-Wheel Drive AT4 is built for those who demand authentic off-road strength without sacrificing premium comfort. With its bold AT4 stance, diesel efficiency, and advanced trailering intelligence, this full-size pickup blends rugged capability with refined technology, ready for workdays, weekends, and everything beyond the pavement. 

Performance & Capability 

• Engine: 3.0L Duramax® Turbo-Diesel delivering exceptional torque and smooth, efficient power 

• Transmission: 10-speed automatic with electronic precision shift for seamless acceleration 

• Drivetrain: Autotrac® two-speed transfer case with 4-Wheel Drive for confident control in changing conditions 

• Suspension: AT4 Off-Road Suspension Package engineered for elevated ground clearance and trail composure 

• Rear Axle: 3.23 ratio balancing towing strength with everyday drivability 

• Automatic Locking Rear Differential: Enhanced traction when the terrain turns unpredictable 

• Hill Descent Control: Controlled confidence on steep or uneven grades 

• Skid Plates: Underbody protection designed for real-world off-road challenges 

• All-Terrain Tires: Goodyear Wrangler Territory MT tires mounted on 20" machined aluminum wheels with Carbon Grey metallic accents 

• Trailering Equipment: Integrated trailer brake controller, hitch guidance with Hitch View, and advanced in-vehicle trailering app 

• Trailer Camera Provisions: Expanded visibility for safer, more confident towing 

• Heavy-Duty Air Filter & 220-Amp Alternator: Built to handle demanding environments and equipment 

Exterior Styling & Utility 

• AT4 Signature Design: Darkened exterior accents and commanding grille presence 

• Sterling Metallic Exterior: A sleek, modern finish that highlights the truck’s bold lines 

• Red Front Recovery Hooks: Functional off-road hardware with unmistakable AT4 identity 

• GMC MultiPro Tailgate: Six-function flexibility for loading, step access, and workstation convenience 

• EZ Lift Power Lock & Release Tailgate: Smooth, effortless cargo access 

• Spray-On Bedliner: Durable protection for the steel cargo box 

• 120-Volt Bed-Mounted Power Outlet: Portable power wherever the job or adventure takes you 

• LED Lighting: Signature LED headlamps, fog lamps, IntelliBeam automatic high beams, and LED cargo bed lighting 

• Perimeter Lighting: Illuminated surroundings for added visibility at night 

• Power Sunroof: Open-air freedom at the push of a button 

• Rear Bumper CornerSteps: Practical access to the cargo bed 

Interior Comfort & Convenience 

• Jet Black / Kalahari Interior: Premium materials with distinctive AT4 detailing 

• Front Bucket Seats: Heated and ventilated with 10-way power adjustment for both driver and passenger 

• Heated Rear Outboard Seats: Elevated comfort for second-row passengers 

• Heated Steering Wheel: Added warmth for cold-weather driving 

• Dual-Zone Automatic Climate Control: Personalized comfort with advanced moisture sensing 

• Power Sliding Rear Window: Fresh air and added versatility 

• Rear Seat Storage Package: Clever, hidden cargo organization 

• Power Tilt & Telescopic Steering Column: Tailored driving position 

• Wireless Charging Pad & Multiple USB Ports: Convenient device connectivity 

• Keyless Open & Push-Button Start: Effortless entry and ignition 

• Remote Start System: Pre-condition the cabin before you step inside 

• Universal Home Remote: Integrated garage and home system access 

Technology & Connectivity 

• 13.4" GMC Premium Infotainment Touchscreen: With Google Built-In compatibility, navigation capability, Bluetooth®, and wireless phone projection 

• 12" Reconfigurable Digital Driver Display: Customizable driving data at a glance 

• HD Surround Vision: 360-degree camera perspectives for parking and trailering precision 

• Rear Camera Mirror: Enhanced rear visibility through camera technology 

• Adaptive Cruise Control: Maintains preset following distance on the highway 

• Bose® Premium Audio System: Rich, immersive sound throughout the cabin 

• Wi-Fi® Hotspot Capability: Stay connected wherever your route leads 

Safety & Driver Assistance 

• GMC Pro Safety Suite: Advanced driver assistance technologies designed for confidence 

• Forward Collision Alert with Automatic Emergency Braking 

• Front Pedestrian Braking & Rear Pedestrian Alert 

• Lane Keep Assist with Lane Departure Warning 

• Rear Cross Traffic Braking 

• Trailer Side Blind Zone Alert 

• Front & Rear Park Assist with Following Distance Indicator 

• Driver Safety Alert Seat: Vibrating seat alerts for intuitive awareness 

• Teen Driver Mode & Buckle-to-Drive: Encourages responsible driving habits 

• Comprehensive Airbag System & Tire Pressure Monitoring System 

Whether navigating rugged trails, towing heavy loads, or cruising through city streets, the 2026 GMC Sierra 1500 AT4 Crew Cab Short Box delivers diesel-powered confidence, advanced innovation, and bold off-road character. It’s a truck engineered for those who expect strength beneath the surface and refinement in every detail, built to explore farther and accomplish more.