Duramax 6.6L V8 Turbocharged 6-Speed Automatic and 4WD. Classy White! Oh yeah! Come take a look at the deal we have on this stunning 2007 GMC Sierra 3500HD. Buying a truck with numerous previous owners can be a little risky but no worries here on this superb one-owner truck. At no cost to you - Drive Forever Worry Free ....That's right FOREVER!!!! The limited powertrain warranty that protects your engine and transmission for the life of your vehicle. Call Deana today for details!!!