2026 GMC Sierra 1500 AT4

Capability and awareness. The AT4 Equipment Group equips this truck for real off-road and trailering work: an off-road suspension with skid plates, hill descent control, an auto-locking rear differential, and red recovery hooks handle the terrain.

The Trailering Package adds an integrated trailer brake controller, trailer side blind zone alert, hitch guidance with Hitch View, trailer camera provisions, and HD Surround Vision — so backing a loaded trailer into a tight spot is as manageable as the hitch up itself. The Technology Package layers in the multicolor 15-inch head-up display, the rear camera mirror that replaces the standard mirror view with a wide camera feed, and the bed view camera for a clear look at the cargo area or a gooseneck connection.

All-terrain 275/60R20 tires on 20×9 machined aluminum wheels round out the off-road profile.

The cabin and the convenience suite. Inside, the Jet Black with Kalahari Accents interior wears perforated leather on the front seats, which are both heated and ventilated. Second-row outboard seats are heated as well.

The AT4 Preferred Package adds a power sliding rear window with rear defogger and a universal home remote. Active dual exhaust with a sport mode, a power sunroof, rain-sensing wipers, a power rake-and-telescoping steering column, wireless charging, a floor-mounted center console, and front and rear premium floor liners with removable carpet insert and rear wheelhouse liners all come standard on this build.

The Bose 7-speaker premium sound system, a 13.4-inch GMC Infotainment System with Google built-in, Apple CarPlay and Android Auto wireless mirroring, SiriusXM with 360L, and a Wi-Fi hotspot cover connectivity. Front and rear park assist, rear cross traffic braking, rear pedestrian detection, and forward collision mitigation round out the driver-assistance picture.

Factory details worth noting. The sticker lists a 220-amp alternator, an external engine oil cooler, an auxiliary external transmission oil cooler, a heavy-duty air filter, a remote vehicle starter, keyless open and start with push-button start, perimeter lighting, LED cargo area lighting, and a spray-on pickup bedliner with GMC logo.

Factory warranty applies. A front license plate kit, sport step boards in black, and front and rear molded splash guards in black are also on the sticker as dealer-installed accessories.

Napleton Buick GMC is at 6305 Northwest Hwy in Crystal Lake — on US-14, close to the Metra UP-NW line and an easy drive from Lake in the Hills, McHenry, Woodstock, and Huntley. We have been family-owned for more than 80 years, and there is no pressure in how we work.

If you want to go over the Technology Package in person or talk through the trailering setup, we are here.