2021 GMC Sierra 1500 Crew Cab

AT4 Pickup 4D 5 3/4 ft

87,507 miles

This vehicle is no longer available

Why You’ll Love This Sierra 1500

Slotted between the SLT and Denali trims in the Sierra 1500 lineup, the AT4 equips this Crew Cab for confident everyday use with its versatile GMC MultiPro Tailgate, adventure-ready engineering, High Definition Surround Vision, and comfortable heated and ventilated front seats.

AT4 Premium Package

Originally valued at $3,200, advanced driver aids such as Ultrasonic Front and Rear Park Assist and Lane Change Alert with Side Blind Zone Alert combine with a Premium Bose 7-Speaker Sound System and Wireless Charging.

Technology Package

Originally valued at $2,075, a comprehensive visual system offers an 8-inch Driver Information Center, HD Surround Vision with 2 Trailer View Camera Provisions, a 15-inch Diagonal Head-Up Display and a Bed View Camera.

Driver Alert Package II

Originally valued at $1,095, advanced driver assistance features include Forward Collision Alert, Lane Keep Assist with Lane Departure Warning, Automatic Emergency Braking and Adaptive Cruise Control.

Duramax 3.0L Turbo-Diesel I6 Engine

Originally valued at $995, the Duramax 3.0L Turbo-Diesel I6 engine delivers robust power and efficiency for demanding tasks.

Power Sunroof

Originally valued at $995, a power sunroof opens the cabin to natural light and an open-air driving experience.

20-inch machined aluminum wheels

Originally valued at $800, 20-inch machined aluminum wheels provide a distinctive appearance and complement the vehicle's stance.

Off-road suspension with Rancho shocks

Features an off-road suspension system with Rancho shocks, providing enhanced damping and control over rugged terrain.

GMC MultiPro tailgate

A versatile tailgate offers six distinct functions, simplifying loading, unloading and accessing the bed.

High-torque diesel power

Delivers substantial 460 lb-ft of torque through a 3.0 Liter turbo diesel 6-cylinder engine, a 10-speed automatic transmission and 4WD, providing strong towing and hauling capability.

Adventure-ready engineering

The AT4 trim is engineered for serious off-road capability, integrating specialized hardware and design for challenging terrain.

High definition surround vision

Provides a comprehensive 360-degree view around the vehicle, including provisions for two trailer-view cameras, assisting with parking and maneuvering.

Automatic locking rear differential

Engages automatically to provide maximum traction to both rear wheels when slippage is detected, enhancing off-road capability.

Heated and ventilated front seats

Front bucket seats are heated and ventilated for comfort in various weather conditions.

Bose premium audio system

The Bose premium audio system delivers a rich and immersive experience with a Richbass woofer.

Spray-on bedliner

A durable spray-on bedliner protects the truck bed from scratches and impacts and features an AT4 logo.

Lane change alert with side blind zone alert

Warns of vehicles in your blind zones and approaching rapidly from behind to assist with safer lane changes.

Wireless charging

Allows convenient charging of compatible smartphones without the need for cables.

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