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2025 GMC Sierra 3500 HD Crew Cab

AT4 Pickup 4D 6 1/2 ft
33,176 miles
Includes:$17,685 in factory upgrades

Why You’ll Love This Sierra 3500

Slotted between the SLT and the AT4X, Denali, and Denali Ultimate in the Sierra 3500 HD lineup, the AT4 brings confident off-road readiness with its off-road suspension and Rancho shocks, complemented by the versatile MultiPro Tailgate and ProGrade trailering system for enhanced utility.

AT4 Premium Plus Package

Originally valued at $4,035, this package adds a power sunroof, a multicolor 15-inch diagonal head-up display, and an auto-dimming inside rearview mirror with camera, enhancing convenience and visibility.

Duramax 6.6L Turbo-Diesel V8 Engine

Originally valued at $9,990, this engine delivers substantial power and torque for demanding towing and hauling applications.

Black Power-Retractable Assist Steps

Originally valued at $2,295, these steps extend automatically for convenient cabin access and retract to maintain ground clearance when not in use.

Gooseneck/5th Wheel Prep Package

Originally valued at $545, this package equips the truck with the necessary hardware to accommodate gooseneck and fifth-wheel hitches for heavy-duty towing.

Thunderstorm Gray Paint

Originally valued at $495, this exterior finish provides a distinctive and modern aesthetic for the vehicle.

Diesel towing powerhouse

Delivers immense 975 lb-ft of torque and 20,000 lbs towing capacity through its Duramax 6.6L Turbo-Diesel V8 engine, Allison 10-speed automatic transmission and 4WD, enhanced by an exhaust brake and after-run cooling function.

Off-road suspension

Provides enhanced ground clearance and articulation for navigating rugged terrain, ensuring confident off-pavement performance.

13.4-inch diagonal center touchscreen

Features a large 13.4-inch diagonal center touchscreen with wireless Apple CarPlay and Android Auto for seamless smartphone integration and media access.

Off-road capability focus

The AT4 trim prioritizes extreme off-road capability with specialized hardware for challenging terrain.

MultiPro Tailgate

Offers six versatile functions, including a work surface and load stop, enhancing cargo management and accessibility for various tasks.

Rancho shocks

Delivers a smooth ride and improved off-road performance through specially tuned Rancho shocks, enhancing comfort and control over varied terrain.

ProGrade trailering system

Includes an in-vehicle trailering app to simplify hitching, monitoring and managing trailer functions, providing greater confidence and control when towing.

Adaptive cruise control

Maintains a set following distance from the vehicle ahead to reduce driver fatigue on long journeys.

Ventilated front seats

Provides cooling comfort through ventilated front seats during warmer weather.

Exclusive Jet Black interior with Kalahari accents

Features an exclusive Jet Black interior with Kalahari accents for a distinctive cabin aesthetic.

Sierra HD Pro Safety suite

Includes automatic emergency braking, forward collision alert, front pedestrian braking, lane departure warning, following distance indicator and IntelliBeam automatic high beams for comprehensive driver assistance.

20-inch high gloss black aluminum wheels

High gloss black 20-inch aluminum wheels provide a commanding stance and enhance the vehicle's overall appearance.

This content is AI-generated and some details may not be 100% accurate. Refer to the details throughout this page for specific vehicle info.

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