Heated Package (Heated Driver & Front Outboard Passenger Seats and Heated Steering Wheel), Preferred Equipment Group 3SA (2 Charge/Data USB Ports, 2-Speed Electronic Shift Transfer Case, 4-Way Manual Driver Seat Adjuster, Chrome Surround Grille w/Chrome Insert Bars, Deep-Tinted Glass, GMC Connected Access Capable, Integrated Trailer Brake Controller, Keyless Open & Start, Manual Tilt Wheel Steering Column, OnStar & GMC Connected Services Capable, Push Button Start, SiriusXM w/360L, Steering Wheel Audio Controls, and Wireless Phone Projection), Remote Start Package (Electric Rear-Window Defogger, Remote Vehicle Starter System, and Unauthorized Entry Theft-Deterrent System), SLE Convenience Package (10-Way Power Driver Seat Adjuster w/Lumbar, 120-Volt Bed Mounted Power Outlet, 2 Charge-Only Rear USB Ports, A/C w/Dual-Zone Automatic Climate Control, LED Fog Lamps, LED Smoked Amber Roof Marker Lamps, and Manual Tilt-Wheel/Telescoping Steering Column), Suspension Package, 10-Speed Automatic, 4WD, Black Cloth, 120-Volt Instrument Panel Power Outlet (DISC), 17"" Machined Aluminum Wheels, 220-Amp Alternator, 3.42 Axle Ratio, 3.73 Rear Axle Ratio, 4-Way Manual Passenger Seat Adjuster, 4-Wheel Disc Brakes, 6 Speakers, 6-Speaker Audio System Feature, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto High-beam Headlights, Automatic Emergency Braking, Brake assist, Buckle to Drive, Bumpers: chrome, Cloth Seat Trim, Compass, Delay-off headlights, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Following Distance Indicator, Forward Collision Alert, Front 40/20/40 Split-Bench Seats, 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, Heated door mirrors, Heavy-Duty 80 Amp Battery, Illuminated entry, IntelliBeam Automatic High Beam On/Off, Lane Departure Warning System, Low tire pressure warning, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Pickup Box, Power door mirrors, Power steering, Power windows, Premium audio system: Premium GMC Infotainment System, Radio: AM/FM w/Premium GMC Infotainment System, Rear reading lights, Rear step bumper, Remote keyless entry, Speed control, Split folding rear seat, Spray-On Bedliner, Steering wheel mounted audio controls, Tachometer, Tilt steering wheel, Traction control, Trip computer, Turn signal indicator mirrors, Variably intermittent wipers, Voltmeter, and Winter Grille Cover.Summit White GMC SLE Sierra 2500HD 4WD Duramax 6.6L V8 Turbodiesel