2025 GMC Sierra 1500 AT4 

in Altona 

The 2025 GMC Sierra 1500 AT4 is built for drivers who want real off-road capability without giving up comfort, technology, or refinement. Finished in Titanium Rush Metallic with a Jet Black/Kalahari interior, this AT4 delivers rugged strength, diesel efficiency, and premium features in one confident package.

Powered by the proven Duramax 3.0L turbo-diesel paired with a 10-speed automatic transmission, this Sierra AT4 offers strong torque, smooth power delivery, and excellent towing confidence.

AT4 OFF-ROAD DESIGN & CAPABILITY
AT4-exclusive exterior with red front recovery hooks
Factory off-road suspension package with skid plates
18 machined aluminum wheels with dark painted pockets
Goodyear Territory MT tires (LT275/65R18)
Dual exhaust and automatic locking rear differential
GMC MultiPro Tailgate with EZ Lift power lock and release
Spray-on bedliner with LED cargo bed lighting
Rear bumper CornerSteps and wheelhouse liners

POWER & PERFORMANCE
Duramax 3.0L Turbo-Diesel engine
10-speed automatic transmission
4WD with AutoTrac two-speed transfer case
Hill Descent Control for steep terrain
Trailer Brake Controller and full Trailering Equipment package
3.23 rear axle ratio for balanced towing and efficiency

INTERIOR COMFORT & CONVENIENCE
Jet Black/Kalahari AT4 interior
Heated and ventilated front seats
Heated second-row outboard seats
Heated steering wheel with power tilt and telescopic column
Power driver and front passenger seats with memory settings
Dual-zone automatic climate control with rear air vents
All-weather floor liners with AT4 logo
Remote start, keyless open, and push-button start

ADVANCED TECHNOLOGY
13.4 GMC Premium Infotainment touchscreen with Google built-in
Wireless Apple CarPlay and Android Auto
Bose premium sound system
Wireless charging and multiple USB ports throughout
12 reconfigurable digital Driver Information Center
Technology Package featuring:
HD Surround Vision
Rear Camera Mirror
Multicolor Head-Up Display
Bed View Camera

SAFETY & DRIVER ASSISTANCE
GMC Pro Safety suite including:
Automatic Emergency Braking
Forward Collision Alert
Front Pedestrian Braking
Lane Keep Assist with Lane Departure Warning
Following Distance Indicator
IntelliBeam automatic high beams
Front and Rear Park Assist
Rear Cross Traffic Braking and Rear Pedestrian Alert
Trailer Side Blind Zone Alert
Adaptive Cruise Control and Teen Driver mode

WHY THE SIERRA 1500 AT4
True off-road hardware with premium interior comfort
Efficient diesel power with excellent torque and range
Advanced trailering and safety technology
A bold, capable truck ready for workdays, weekends, and everything in between

The 2025 GMC Sierra 1500 AT4 is the perfect balance of toughness and refinement. Whether you're towing, exploring off the beaten path, or commuting in comfort, this AT4 is built to handle it all with confidence.