2021 GMC SIERRA 1500 CREW CAB

This clean title 2021 GMC Sierra 1500 AT4 is GMC’s off-road hero — a premium half-ton built to leave the pavement behind while keeping you wrapped in genuine luxury. The AT4 takes the refined Sierra platform and adds serious trail hardware, then pairs it here with the efficient 3.0L Duramax Turbo-Diesel inline-six for a truck that truly does it all.

The 3.0L Duramax produces 277 horsepower and a muscular 460 lb-ft of torque, paired with a 10-speed automatic and 4WD. As an AT4, this Sierra comes factory-equipped with a 2-inch suspension lift, off-road-tuned Rancho shocks, a locking rear differential, skid plates, all-terrain tires, Hill Descent Control, and signature red recovery hooks. It’s built to tackle trails and tow with equal confidence — all while returning impressive diesel fuel economy of up to 22 city and 26 highway.

Inside, the AT4 delivers premium comfort to match its capability. Leather seats with both heating and ventilation, a heated steering wheel, a power driver’s seat, cruise control, automatic headlights, power windows and heated mirrors, front USB charging, and a backup camera all come standard. Apple CarPlay, Android Auto, and Bluetooth keep you connected on every drive.

Clean title, Duramax diesel efficiency, and genuine AT4 off-road hardware wrapped in GMC luxury — this is the rare truck that conquers the trail, tows the trailer, and saves fuel doing it.

We offer a full range of financing, warranty protection, insurance protection and even trade ins! Please visit our website at carsimpleonline.com for more information, tools and resources to help you with your purchase. We work with all local and out of state credit unions and banks.

Nationwide shipping available.

Disclaimer: (CarSimple Pricing and Payment Estimates)

All payment amounts are estimates for illustrative purposes only and are not an advertisement or offer of credit. Payments exclude taxes, title, registration, license fees, dealer documentation fee of $1,295, insurance, after-market upgrades, theft protection plans, inspection/emissions fees, and any applicable marketing or service fees. Actual payment may vary based on credit approval, cash or trade-in value, term, fees, special offers, and applicable tax rates. Not all customers will qualify. Final purchase price will include all applicable costs. Please contact us for complete details.