Only 24,975 Miles! This GMC Sierra 3500HD boasts a Turbocharged Diesel V8 6.6L/403 engine powering this Automatic transmission. TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED, TRAILERING WIRING PROVISIONS, FOR CAMPER, FIFTH WHEEL AND GOOSENECK TRAILER, TIRES, LT265/70R18E ALL-SEASON, BLACKWALL.*This GMC Sierra 3500HD Comes Equipped with These Options *SUSPENSION PACKAGE, HANDLING/TRAILERING, HEAVY-DUTY, SLE PREFERRED PACKAGE, LICENSE PLATE FRONT MOUNTING PACKAGE , TAILGATE, LOCKING, TAILGATE, EZ-LIFT, STEERING WHEEL CONTROLS, MOUNTED AUDIO CONTROLS, STEEL GRAY METALLIC, SLE PREFERRED EQUIPMENT GROUP, SEATS, FRONT 40/20/40 SPLIT-BENCH, 3-PASSENGER, DRIVER AND FRONT PASSENGER MANUAL RECLINING, SEAT ADJUSTER, DRIVER 6-WAY POWER.* The Experts' Verdict...*As reported by KBB.com: If you require a vehicle that can transport over 10,000 pounds without breaking a sweat, the 2013 GMC Sierra HD deserves a spot on your short list. Furthermore, most prospective HD truck buyers who place a premium on luxury will find the Sierra HD Denali worth springing for.* Stop By Today *Test drive this must-see, must-drive, must-own beauty today at Henry Brown Buick GMC, 1500 E Drivers Way, Gilbert, AZ 85297.