The 2020 GMC Sierra 2500HD AT4 is a rugged and capable heavy-duty pickup that's ready to take on any challenge. With its powerful Duramax 6.6L V8 Turbodiesel engine, advanced 4WD system, and a wealth of premium features, this Sierra AT4 is the perfect choice for those who demand the best.
- SUNROOF, POWER
- GOOSENECK / 5TH WHEEL PACKAGE
- TECHNOLOGY PACKAGE
- ENGINE BLOCK HEATER
- ALTERNATOR, 220 AMPS
- AT4 PREMIUM PACKAGE
- DRIVER ALERT PACKAGE II
- OFF-ROAD ASSIST STEPS, 3 ROUND TUBULAR, BLACK
- 20 HIGH GLOSS BLACK PAINTED WHEELS
- HIGH IDLE SWITCH
The Sierra AT4 is packed with an impressive array of technology and convenience features, including a Bose premium sound system, navigation, wireless charging, and a 15-inch head-up display. Safety is also a top priority, with advanced driver assistance systems like Forward Collision Alert, Lane Departure Warning, and Automatic Emergency Braking.
Whether you're hauling heavy loads, towing a trailer, or tackling rugged off-road terrain, the 2020 GMC Sierra 2500HD AT4 is up for the task. Its robust construction, premium materials, and exceptional attention to detail make this truck a true standout in the heavy-duty segment.
Experience the power, capability, and refined luxury of the 2020 GMC Sierra 2500HD AT4 for yourself. Visit us at Leesburg Buick GMC today and let us show you why this truck is the perfect choice for your next adventure.
At Leesburg Buick GMC, we're satisfaction-driven and proudly serve Leesburg, Ashburn, Sterling, Reston, and all of Northern Virginia. Visit us today and experience the difference.

