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2013 GMC Truck Sierra 3500HD Extended Cab 4WD
The 2013 Sierra 3500HD Extended Cab 4WD is a 4-door, up to 6-passenger PF, available in 6 trims, ranging from the Work Truck Long Box SRW to the SLT Long Box SRW.
Upon introduction, both trims are equipped with a standard 6.0-liter, V8, 322-horsepower engine. A 6-speed a transmission with overdrive is standard. See more... See Less