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2021 GMC Sierra 1500 Crew Cab
AT4 Pickup 4D 5 3/4 ft
95,943 miles
Includes:$3,380 in factory upgrades
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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 adventure-ready engineering, the versatile GMC MultiPro Tailgate, and comfortable heated and ventilated front seats.

AT4 Preferred Package

Originally valued at $1,420, this package includes a Premium Bose 7-Speaker Sound System, Wireless Charging, a Power Sliding Rear Window with Defogger, and Premium GMC Infotainment System with Navigation.

Duramax 3.0L Turbo-Diesel I6 Engine

Originally valued at $995, this Duramax 3.0L Turbo-Diesel I6 engine provides strong torque and fuel efficiency for hauling and long-distance driving.

Black Sport Step

Originally valued at $965, the black sport step offers a convenient and secure foothold for easier cabin access.

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.

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.

Wireless charging

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

18-inch machined aluminum wheels

Machined aluminum wheels measuring 18-inches provide a balanced combination of strength and reduced weight for improved handling.

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