Summit White 2026 GMC Sierra 1500 AT4 4WD 10-Speed Automatic 3.0L I6 10-Speed Automatic, 4WD, Jet Blk With Kalahari Acc Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Interior Power Outlet, 2 Charge/Data USB Ports Inside Center Console, 2 Type-C Charge-Only Rear USB Ports, 2 USB Ports, 220 Amp Alternator, 3.23 Rear Axle Ratio, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, AT4 Preferred Package, AT4 Premium Package, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Auto-Locking Rear Differential, Automatic Emergency Braking, Automatic temperature control, Bed View Camera, Black Badging Package (LPO), Black Chrome Grille Insert Bars, Black GMC Emblems (LPO), Black Sierra Nameplates (LPO), Block heater, Brake assist, Buckle to Drive, Bumpers: body-color, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electronic Stability Control, Emergency communication system: OnStar, Engine Block Heater, Floor-Mounted Center Console, Following Distance Indicator, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front Pedestrian Braking, Front Prem Floor Liners w/Removable Carpet Insert, Front Rain-Sensing Wipers, Front reading lights, Front wheel independent suspension, Fully automatic headlights, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated door mirrors, Heated Driver & Front Outboard Passenger Seating, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty Air Filter, Hill Descent Control, Hitch Guidance, Hitch View, Illuminated entry, In-Vehicle Trailering System App, Inte