2020 GMC Sierra 1500 AT4 — Powerful, capable, and loaded with premium features. This White AT4 comes with a stout 6.2L ECOTEC3 V8 and a 10-speed automatic transmission for confident towing and on- or off-road performance. Well-equipped for work and play, this truck has 123,115 miles and a long list of factory options and tech. Highlights - Engine/Drivetrain: 6.2L V8 with 10-speed electronically controlled automatic transmission. - Off-road and towing capability: Off-Road Performance Package, ProGrade Trailering Package, Towing/Camper Package, trailer tire pressure monitor, HD Surround Vision with two trailer-view camera provisions, Bed View Camera, and Trailer Camera integrations. - Safety & driver assistance: Adaptive Cruise Control (camera), Automatic Emergency Braking, Front Pedestrian Braking, Forward Collision Alert, Lane Keep Assist, Lane Change Alert, Rear Cross Traffic Alert, Front and Rear Park Assist (ultrasonic), Rear Camera Mirror (auto-dimming), Following Distance Indicator, Safety Alert Seat. - Comfort & convenience: Leather interior, power sunroof, power windows/locks/mirrors, heated exterior mirrors, power rear sliding window with defogger, universal home remote, wireless charging, fixed running boards, LPO tubular assist steps. - Tech & audio: Premium GMC infotainment with navigation on an 8" touchscreen, Bose 7-speaker premium system, 8" enhanced driver information center, 15" multicolor head-up display. - Appearance & extras: AT4 Premium and Preferred Packages, chrome and black mirror cap options, aluminum/alloy wheels, license plate kit, full-size spare tire. This Sierra AT4 blends premium comfort, advanced safety, trailering readiness, and true V8 capability—ideal for hauling, towing, or enjoying rugged adventures with upscale amenities. Contact us to schedule a test drive or request more photos.