The GMC AT4 lineup delivers adventure-ready capability across six distinct vehicle categories, from compact SUVs to heavy-duty trucks. This off-road focused sub-brand brings rugged styling, enhanced ground clearance, and specialized terrain management systems to handle challenging conditions while maintaining everyday comfort.
Rise to the call of adventure in the GMC AT4 lineup. Ruggedly styled and packed with tech-savvy and intuitive advanced features, AT4 is designed to be adventure-ready and engineered for action. Each model features distinctive red recovery hooks, unique grille patterns, and aggressive wheel designs that create a purposeful appearance matching the enhanced mechanical capabilities.
|
Model |
Engine |
Towing Capacity |
Ground Clearance |
Key Features |
|---|---|---|---|---|
|
Terrain AT4 (2026) |
1.5L Turbo |
680 kg (1,500 lbs) |
Lifted ride height |
Metal underbody protection |
|
Acadia AT4 |
2.5L Turbo |
2,268 kg (5,000 lbs) |
25mm taller |
Active Torque Control AWD |
|
Canyon AT4 |
TurboMax 2.7L |
3,492 kg (7,700 lbs) |
244mm (9.6") |
MultiStow tailgate |
|
Sierra 1500 AT4 |
3.0L Turbo-Diesel |
4,082 kg (9,000 lbs) |
2-inch lift |
Rancho monotube shocks |
|
Yukon AT4 |
6.2L V8 / 3.0L Diesel |
Varies by config |
Enhanced stance |
3-row seating capacity |
|
Sierra HD AT4 |
6.6L Turbo-Diesel |
9,661 kg (21,300 lbs) |
257mm (10.1") |
Twin-tube Rancho shocks |
The redesigned Terrain AT4 launches as a 2026 model year vehicle with enhanced off-road capability compared to previous generations. This compact SUV includes AT4-exclusive terrain mode selection, lifted ride height, and metal underbody protection shields for improved durability.
Standard AT4 features include 432mm (17-inch) all-terrain tires, red front recovery hooks, and animated headlamps with unique lighting sequences. The 1.5L turbocharged engine produces 175 hp and 203 lb-ft of torque, paired with an 8-speed automatic transmission and standard all-wheel drive. Hill Descent Control helps maintain controlled speeds on steep descents by automatically managing brake application and engine braking.
The Acadia AT4 represents the most capable version of GMC's mid-size SUV. Built on the larger 2024 platform, this model includes specialized off-road features within a seven or eight-passenger configuration. The 2.5L turbocharged engine delivers 328 hp and 326 lb-ft of torque through an 8-speed automatic transmission.
AT4-exclusive features include Active Torque Control AWD with twin-clutch rear differentials for optimal traction control. The system provides 25mm (1-inch) taller ride height compared to standard Acadia models. Selectable drive modes include Terrain mode and Hill Descent Control, while the front fascia includes signature red tow hooks and integrated skid plates. Maximum towing capacity reaches 2,268 kg (5,000 lbs) when properly equipped.
The Canyon AT4 brings mid-size truck capability to the off-road lineup with a factory-installed 51mm (2-inch) lift and specialized drivetrain components. The TurboMax 2.7L turbocharged engine produces 310 hp and 430 lb-ft of best-in-class standard torque, enabling towing capacity up to 3,492 kg (7,700 lbs).
Standard equipment includes Advanced Hill Descent Control, automatic locking rear differential, and Two-Speed Autotrac transfer case with transfer case shield. Drive Mode Selector offers Normal, Terrain, Tow/Haul, and Off-Road modes to optimize performance for different conditions. The MultiStow tailgate storage system provides integrated organization for gear and equipment.
Available AT4X Package adds a 76mm (3-inch) factory lift, front and rear electronic locking differentials, and Multimatic DSSV dampers. This configuration includes 33-inch MT tires and Baja mode for high-speed desert running.
The Sierra 1500 AT4 serves as the flagship of GMC's off-road truck lineup, combining serious capability with premium comfort. This full-size pickup includes a factory-installed 51mm (2-inch) suspension lift and Rancho monotube shocks for improved ground clearance and wheel travel over rough terrain.
The standard Duramax 3.0L Turbo-Diesel engine pairs with a 10-speed automatic transmission, while an available 6.2L EcoTec3 V8 provides additional power options. Maximum towing capacity reaches 4,082 kg (9,000 lbs) depending on configuration. Advanced off-road technology includes selectable terrain modes that adjust throttle response, transmission shift points, and traction control settings.
Interior appointments feature Jet Black leather with Kalahari accent stitching and heated/ventilated front seats. The available 381mm (15-inch) diagonal Head-Up Display keeps important information in the driver's line of sight during off-road adventures.
The Yukon AT4 brings three-row seating capacity to serious off-road capability. This full-size SUV accommodates up to eight passengers while maintaining the ground clearance and traction systems needed for challenging terrain. The AT4 Ultimate trim elevates the model with additional luxury appointments and off-road enhancements.
Two engine options include a 6.2L V8 producing 420 hp and 460 lb-ft of torque, or a 3.0L Duramax Turbo-Diesel generating 305 hp and 495 lb-ft of torque. Both powertrains connect to a 10-speed automatic transmission designed to optimize power delivery across different driving conditions.
Interior technology centers around a 427mm (16.8-inch) diagonal Premium GMC Infotainment Center with vertical interface design. An available 203mm (8-inch) rear climate control touchscreen helps passengers manage comfort settings independently.
The Sierra Heavy Duty AT4 delivers maximum capability for serious work and recreation. Available in 2500 and 3500 configurations, these trucks handle the heaviest towing and payload demands while maintaining off-road readiness through specialized suspension and drivetrain components.
The available Duramax 6.6L Turbo-Diesel V8 engine pairs with an Allison 10-speed automatic transmission for maximum torque delivery. Advanced ProGrade Trailering technology streamlines the hitching process with integrated tools that enhance confidence and visibility. Maximum towing capacity reaches 9,661 kg (21,300 lbs) depending on configuration.
Standard features include Jet Black interior with Kalahari accents, heated/ventilated leather seating, and 20-inch gloss-black aluminum wheels with available BFGoodrich off-road tires. The Off-Road Package includes twin-tube Rancho shocks and comprehensive skid plate protection.
For extreme off-road capability, select AT4 models offer AT4X variants with enhanced hardware and specialized components. The Sierra HD AT4X adds a factory-installed 38mm (1.5-inch) suspension lift, Multimatic DSSV dampers, and 35-inch Goodyear Territory MT tires. The Canyon AT4X provides similar enhancements scaled for mid-size truck applications.
AT4X AEV Edition models include stamped steel bumpers and skid plates from American Expedition Vehicles for enhanced protection during extreme off-road use. These variants represent the pinnacle of GMC's off-road engineering and design.
All AT4 models include GMC Pro Safety as standard equipment. This comprehensive suite features Forward Collision Alert, Automatic Emergency Braking, and Lane Keep Assist to help prevent accidents and reduce collision severity. Advanced camera systems provide multiple viewing angles to help drivers navigate challenging terrain and tight spaces.
Available 360-degree surround-view cameras create a bird's-eye perspective of the vehicle's immediate surroundings, particularly useful when maneuvering around obstacles or positioning for optimal traction during off-road adventures.
Visit Applewood Chevrolet Buick GMC in Mississauga to experience the complete AT4 lineup and find the adventure-ready vehicle that matches your specific off-road requirements and daily driving needs.
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