2026 GMC Sierra 1500 SLT

At a glance: 5.3L V8 · 10-Speed Automatic with Electronic Precision Shift · 4WD · Crew Cab / Short Bed · delivery miles only · Glacier White Tricoat exterior / Jet Black interior

The X31 Off-Road Package and X31 Off-Road and Protection Package give this SLT real trail capability: off-road suspension, skid plates, hill descent control, a two-speed electronic AutoTrac transfer case, a heavy-duty air filter, dual exhaust, and an auto-locking rear differential. Rolling stock is 20-inch polished aluminum wheels on 275/60R20 all-terrain tires — practical on dirt roads or wet highway.

The spray-on bedliner with GMC logo and all-weather floor liners (first and second rows) mean the bed and interior are protected from day one. Chrome wheel-to-wheel assist steps make entry easy with the short bed and crew cab combination.

The SLT Convenience Package adds ventilated driver and front passenger seats, wireless charging, a power rake-and-telescoping steering column, and the premium Bose 7-speaker sound system. The SLT Preferred Package brings heated second-row outboard seats, a power sliding rear window with rear defogger, adaptive cruise control, and a universal home remote.

Inside, the 13.4-inch GMC Infotainment System with Google built-in apps — including navigation and voice assistance — pairs with wireless Apple CarPlay and Android Auto, a SiriusXM with 360L trial subscription, and a Wi-Fi hotspot. The Preferred Equipment Group 4SA adds keyless open and start, push-button start, a remote vehicle starter system, rain-sensing wipers, perimeter lighting, an integrated trailer brake controller, an auxiliary external transmission oil cooler, a 120-volt interior power outlet, and LED cargo area lighting.

The ProGrade Trailering System includes Hitch View and the in-vehicle trailering app. The Sierra Safety Plus Package covers HD Surround Vision, ultrasonic front and rear park assist, trailer side blind zone alert, rear cross traffic braking, rear pedestrian detection, trailer camera provisions, and a safety alert seat.

Forward collision mitigation and lane keep assist round out the driver-assistance suite.

Napleton Buick GMC is at 6305 Northwest Highway in Crystal Lake — on US-14, easy to reach from Cary, Algonquin, Lake in the Hills, and Lakewood, and right on the Metra UP-NW line. We have been family-owned for more than 80 years and believe the process of buying a truck should be as straightforward as the truck itself.

When you are ready to put this Sierra to work, we will have it out front.