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2026 GMC Sierra 1500 AT4 OVERVIEW

2026 GMC Sierra 1500 AT4 in Colorado Springs

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Duramax^® 3.0L Turbo-Diesel engine with 10-speed automatic transmission
2" factory lift with off-road suspension and Rancho^® monotube shocks
Bose Premium Sound System
Front and Rear Park Assist

2026 GMC Sierra 1500 AT4 MODELS

Sierra 1500 AT4
Sierra 1500 AT4X

GMC Sierra 1500 AT4 Dealer in Colorado Springs

2026 GMC Sierra 1500 AT4 PERFORMANCE

DURAMAX 3.0L TURBO-DIESEL

Power through even the toughest terrain, thanks to an available Duramax 3.0L Turbo-Diesel engine.

FACTORY-INSTALLED 2" LIFT

AT4 and AT4X full-size trucks feature a 2" suspension lift to help provide serious clearance for your off-road adventures.

HILL DESCENT CONTROL

Both Sierra AT4 and AT4X off-road trucks come with Hill Descent Control, an antilock braking feature engineered to help provide a smooth, controlled descent on steep declines.

2026 GMC Sierra 1500 AT4 APPEARANCE

AT4 FRONT BUMPER AND GRILLE

Grille with high-gloss black header, insert bars with gloss-black accents and red recovery hooks.*

SPRAY-ON BEDLINER

AT4 and AT4X off-road trucks offer high-strength steel cargo beds featuring spray-on bedliner with GMC logo.

EXCLUSIVE AT4X WHEELS

Rugged 33" Goodyear^® Wrangler Territory mud terrain tires and 18" painted aluminum wheels with dark painted pockets.

2026 GMC Sierra 1500 AT4 COMFORT

AVAILABLE MYGMC MOBILE APP

Experience convenience, command and control in or out of your vehicle with the myGMC mobile app.*

WIRELESS CAPABILITY

Personalize your in-vehicle entertainment and more by connecting your compatible smartphone to your in-vehicle touchscreen via phone projection.

13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM*

The color touchscreen with Google built-in* compatibility and voice-activated technology for your phone provides a seamless way to customize your entertainment.

ADAPTIVE CRUISE CONTROL*

Allows you to set a cruise control speed and automatically follow a detected vehicle ahead at a driver-selected following gap.

2026 GMC Sierra 1500 AT4 SAFETY & WARRANTY

PRO GRADE PROTECTION

Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:

3-year / 36,000-mile Bumper-to-Bumper Limited Warranty
5-year / 60,000-mile Powertrain Limited Warranty
5-year / 60,000-mile Roadside Assistance & Courtesy Transportation
3-year / 36,000-mile Corrosion Protection
6-year / 100,000-mile Rust-Through Protection
First maintenance visit

2026 GMC Sierra 1500 AT4 Safety Main Img

SIDE BLIND ZONE ALERT

Side Blind Zone Alert can provide side-mirror visual alerts when a moving vehicle is detected in a side blind zone. It can help you avoid lane change collisions.

BLIND ZONE STEERING ASSIST

Blind Zone Steering Assist can provide a brief, firm turn of the steering wheel when a potential collision is detected with a moving vehicle in the lane you’re entering.

ENHANCED AUTOMATIC EMERGENCY BRAKING

Enhanced Automatic Emergency Braking works with Forward Collision Alert to help you avoid or reduce the severity of a front-end collision with a detected vehicle you’re following, including at highway speeds. Radar and camera technology are used to automatically provide hard emergency braking or enhance the driver’s hard braking.

Check Out Our Inventory

Check Out Our Inventory

2026 GMC Sierra 1500 AT4 OVERVIEW

2026 GMC Sierra 1500 AT4 in Colorado Springs

2026 GMC Sierra 1500 AT4 MODELS

Sierra 1500 AT4

Sierra 1500 AT4X

GMC Sierra 1500 AT4 Dealer in Colorado Springs

2026 GMC Sierra 1500 AT4 PERFORMANCE

DURAMAX 3.0L TURBO-DIESEL

FACTORY-INSTALLED 2" LIFT

HILL DESCENT CONTROL

2026 GMC Sierra 1500 AT4 APPEARANCE

AT4 FRONT BUMPER AND GRILLE

SPRAY-ON BEDLINER

EXCLUSIVE AT4X WHEELS

2026 GMC Sierra 1500 AT4 COMFORT

AVAILABLE MYGMC MOBILE APP

WIRELESS CAPABILITY

13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM*

ADAPTIVE CRUISE CONTROL*

2026 GMC Sierra 1500 AT4 SAFETY & WARRANTY

PRO GRADE PROTECTION

SIDE BLIND ZONE ALERT

BLIND ZONE STEERING ASSIST

ENHANCED AUTOMATIC EMERGENCY BRAKING

Check Out Our Inventory

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