2020 GMC Sierra 1500 AT4 Onyx Black 4WD EcoTec3 6.2L V8 Recent Arrival! CARFAX One Owner. â Sunroof and moonroof. â Adaptive cruise control. â Running boards. â Premium audio system. â Blind spot monitoring. â Tow package with tow hitch and integrated trailer brake controller. â 6.2L V8 engine with 10-speed automatic transmission. â Four-wheel drive with off-road suspension, 2-inch factory lift, and monotube shocks. â Aerial view camera system and backup camera. â Head-up display. â Heated front seats and cooled front seats. â Heated rear seats and a heated steering wheel. â Navigation system. â Lane keeping assist and lane departure warning. â Front collision warning and front collision mitigation. â Rear parking aid. â Power driver seat and power passenger seat with adjustable lumbar support. â Keyless entry with keyless start and remote engine start. â Multi-zone climate control and cruise control. â Integrated tailgate step, all-terrain tires, and fog lamps.