Look at this 2015 GMC Sierra 2500HD available WiFi SLT. Its Automatic transmission and Turbocharged Diesel V8 6.6L/403 engine will keep you going. This GMC Sierra 2500HD available WiFi features the following options: WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, WHEELS, 18" (45.7 CM) CHROMED ALUMINUM includes 18" x 8" (45.7 cm x 20.3 cm) steel spare wheel. (STD), UNDERBODY SHIELD, FRAME-MOUNTED SHIELDS includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case, TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode, TRAILERING WIRING PROVISIONS, FOR CAMPER, FIFTH WHEEL AND GOOSENECK TRAILER includes additional 7-way wiring harness is located at the rear of the pickup box attached to the rear frame cross member, TIRES, LT265/70R18E ALL-TERRAIN, BLACKWALL, SUSPENSION PACKAGE, OFF-ROAD includes Z71 chrome front fender emblems, twin tube Rancho brand shocks, (JHD) Hill Descent Control, (NZZ) underbody shield and Off-Road Driver Information Center graphics, SUNROOF, POWER, STEERING WHEEL, HEATED, LEATHER WRAPPED WITH AUDIO AND CRUISE CONTROLS, and SLT PREFERRED EQUIPMENT GROUP includes standard equipment.