2012 Chevrolet Silverado 2500HD 4WD LT Crew Cab. Recent Arrival! 2012 Chevrolet Silverado 2500HD LT Summit White Allison 1000 6-Speed Automatic, 4WD, Dark Titanium w/Cloth Seat Trim. If you're in the market for a new or used car, you've come to the right place. The staff... via AutoRevolution