Summit White 2026 GMC Sierra 3500HD SLE 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Black Cloth, 10-Way Power Driver Seat Adjuster with Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge/Data USB Ports, 2 Speakers, 2-Speaker Audio System Feature, 2-Speed Active Transfer Case, 2-Speed Electronic Shift Transfer Case, 220 Amp Alternator, 4-Way Manual Driver Seat Adjuster, 4-Way Manual Passenger Seat Adjuster, 4-Wheel Disc Brakes, ABS brakes, Air Conditioning, AM/FM radio: SiriusXM with 360L, Auto High-beam Headlights, Automatic Emergency Braking, Brake assist, Buckle to Drive, Bumpers: chrome, Cargo Tie-Down Rings (set of 4), Chrome Surround Grille with Chrome Insert Bars, Cloth Seat Trim, Compass, Deep-Tinted Glass, Delay-off headlights, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Dual-Zone Automatic Climate Control, Electric Rear-Window Defogger, Electronic Stability Control, Emergency communication system: OnStar Services capable, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, Following Distance Indicator, Forward Collision Alert, Front 40/20/40 Split-Bench Seats with Lockable Storage, Front anti-roll bar, Front Center Armrest w/Storage, Front License Plate Kit, Front Pedestrian Braking, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC Premium 13.4'' Diagonal Information Display, Gooseneck/5th Wheel Prep Package, Heated door mirrors, Heavy-Duty 80 Amp-Hour Battery, Illuminated entry, IntelliBeam Automatic High Beam on/Off, Keyless Open and Start, Lane Departure Warning System, LED Cargo Area Lighting, LED Fog Lamps, Low tire pressure warning, Manual Tilt-Wheel/Telescoping Steering Column, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Pickup Bed, Power door mirrors, Power steering, Po