The 2007 GMC Truck Sierra Classic 2500HD Regular Cab 4WD is a 2-door, 3-passenger full size pickup, available in 3 trims, ranging from the Work Truck Long Box to the SLE1 Long Box.

Upon introduction, both trims are equipped with a standard 6.0-liter, V8, 300-horsepower engine. A 5-speed manual transmission with overdrive is standard, and a 4-speed automatic transmission with overdrive is optional.

The 2007 GMC Truck Sierra Classic 2500HD Regular Cab 4WD is a carryover from 2006.