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2020 GMC Sierra 3500 HD Crew Cab

AT4 Pickup 4D 6 1/2 ft
105,166 miles
Includes:$17,120 in factory upgrades

Why You’ll Love This Sierra 3500

Slotted between the SLT and Denali trims in the GMC Sierra 3500 HD lineup, the AT4 elevates everyday capability with an off-road suspension featuring Rancho shocks, power-folding/-extending vertical trailering mirrors for confident hookups, and heated and ventilated leather-appointed front seats for long-haul comfort.

AT4 Premium Package

Originally valued at $3,465, it includes Ultrasonic Front and Rear Park Assist, Rear Cross Traffic Alert, and Lane Change Alert, plus a Bose Premium 7 Speaker Sound System and GMC Infotainment System with Navigation.

Technology Package

Originally valued at $2,125, it features HD Surround Vision with 2 Trailer View Camera Provisions and a Bed View Camera, plus a Multicolor 15" Diagonal Head-Up Display for key information.

Driver Alert Package II

Originally valued at $645, Forward Collision Alert, Automatic Emergency Braking, a Safety Alert Seat and Lane Departure Warning enhance driver confidence.

Gooseneck/5th Wheel Package

Originally valued at $545, this package provides the necessary Gooseneck/5th Wheel Prep Package for heavy-duty towing applications.

Duramax 6.6L Turbo-Diesel V8 engine

Originally valued at $9,890, a Duramax 6.6L Turbo-Diesel V8 engine delivers substantial power and torque for demanding tasks.

Heavy-duty hauler

Unleashes 445 HP and 910 lb-ft through its 6.6L Duramax Turbo Diesel V8 engine, Allison 10-speed automatic transmission and 4WD, providing 21,040 lbs towing capacity with a dual path air induction system and intelligent diesel exhaust brake.

World's first six-function GMC MultiPro Tailgate

Provides versatile cargo management with six distinct functions, making loading, unloading and accessing the bed easier.

Up to 15 camera views

Enhances situational awareness with multiple camera angles, including Surround View and Transparent Trailer View, for easier maneuvering and trailering.

Heated and ventilated leather-appointed front seats

Offers personalized comfort with 10-way power adjustments, heating and ventilation for year-round driving.

Multicolor 15" diagonal head-up display

Projects key vehicle information, including an off-road inclinometer, directly onto the windshield for improved focus on the road or trail.

Adventure-ready engineering

The AT4 trim prioritizes premium off-road capability, blending rugged hardware with advanced technology for adventure-focused buyers.

Front leather-appointed seating

Features Jet Black with Kalahari accents, providing a premium and distinctive interior aesthetic.

Power-folding and extending trailering mirrors

Provides enhanced visibility for towing with auto-dimming upper glass, perimeter lighting and puddle lamps for convenience.

Leather-wrapped heated steering wheel

Warms hands in colder weather and provides a comfortable grip for long drives.

Apple CarPlay compatibility

Integrates your iPhone for navigation, music and communication.

Android Auto compatibility

Connects your Android phone for seamless access to apps, maps and media.

Off-road suspension with Rancho shocks

Provides enhanced damping and articulation for improved comfort and control over challenging terrain.

Eaton automatic locking rear differential

Automatically locks the rear wheels for maximum traction in low-grip off-road situations.

Power sunroof

Opens the cabin to the outside, providing an airy feel and additional natural light.

Traction Select System

Optimizes vehicle performance for various conditions with dedicated Off-Road and Tow/Haul modes.

2-speed AutoTrac transfer case

Automatically shifts between 2WD and 4WD as needed, providing confident traction without driver intervention.

Integrated trailer brake controller

Provides seamless and responsive control of trailer brakes for safer towing.

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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