KBB.com Brand Image Awards. This GMC Sierra 2500HD delivers a Turbocharged Diesel V8 6.6L/403 engine powering this Automatic transmission. WHEELS, 20" (50.8 CM) FORGED POLISHED ALUMINUM includes 18" x 8" (45.7 cm x 20.3 cm) steel spare wheel., 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. * This GMC Sierra 2500HD Features the Following Options * SUSPENSION PACKAGE, STANDARD includes 51mm twin tube shock absorbers and 33mm front stabilizer bar (STD), DURAMAX PLUS PACKAGE includes (LML) Duramax 6.6L Turbo Diesel V8 engine, (MW7) Allison 1000 6-speed automatic transmission and (Y65) Driver Alert Package, DRIVER ALERT PACKAGE includes Lane Departure Warning, Forward Collision Alert, and Safety Alert Seat , TIRES, LT265/60R20E ALL-TERRAIN, BLACKWALL, SWITCH, HIGH IDLE, SUNROOF, POWER, SEATS, FRONT FULL-FEATURE LEATHER-APPOINTED BUCKET with (KA1) heated seat cushions and seat backs. Includes 12-way power driver and front passenger seat adjusters, including 2-way power lumbar control, 2-position driver memory, adjustable head restraints, (D07) floor console and storage pockets. (STD), REAR AXLE, 3.73 RATIO, PAINT, SOLID, MIRRORS, OUTSIDE HEATED POWER-ADJUSTABLE VERTICAL CAMPER, MANUAL-FOLDING AND EXTENDING, BLACK. Includes integrated turn signal indicators consisting of 50 square inch flat mirror surface positioned over a 20 square inch convex mirror surface with a common head and lower convex spotter glass (convex glass is not heated and not power adjustable).. * See What the Experts Say!* As reported by KBB.com: This truck was built to help you tow heavy things on a daily basis, whether it's short or long distances. Whatever the job calls for, the 2015 GMC Sierra will get it done. * Stop By Today * Come in for a quick visit at Michael's Toyota of Bellevue, 3080 148th Ave SE, Bellevue, WA 98007 to claim your GMC Sierra 2500HD!