Summit White 2026 GMC Sierra 3500HD Pro 4WD 4D Crew Cab Pro 4WD 4WD 6.6L V8 1SA Pro Safety Plus Package, 2 Charge/Data USB Ports, 2-Speed Electronic Shift Transfer Case, 220 Amp Alternator, 4-Way Manual Driver Seat Adjuster, 4-Way Manual Passenger Seat Adjuster, Auto-Dimming Inside Rear-View Mirror, Chrome Grille with Flat Black Grille Insert Bars, Convenience Package, Deep-Tinted Glass, Electric Rear-Window Defogger, Exterior Parking Camera Rear, EZ Lift Power Lock and Release Tailgate, Front 40/20/40 Split-Bench Seats with Lockable Storage, Fully automatic headlights, Heavy-Duty 80 Amp-Hour Battery, Illuminated entry, Lane Change Alert with Side Blind Zone Alert, Lane Departure Warning System, LED Cargo Area Lighting, Perimeter Lighting, Pickup Bed, Power-Adjustable Black Outside Mirrors, Preferred Equipment Group 1SA, Premium audio system: GMC Infotainment System, Push Button Start, Rear Cross Traffic Alert, Remote Keyless Entry, Snow Plow Prep/Camper Package, Solar Absorbing Tinted Glass, Speed control, Spray-on Pickup Bedliner, Suspension Package, Ultrasonic Front and Rear Park Assist, Variably intermittent wipers, Vinyl Seat Trim, Wireless Phone Projection.