The 2007 GMC Truck Sierra Classic 1500 Regular Cab 4WD is a 2-door, 3-passenger full size pickup, available in 6 trims, ranging from the Work Truck Standard Box to the SLE1 Long Box.

Upon introduction, the Work Truck Standard Box is equipped with a standard 4.3-liter, V6, 195-horsepower engine that achieves 15-mpg in the city and 18-mpg on the highway. A 4-speed automatic transmission with overdrive is standard, and a 5-speed manual transmission with overdrive is optional. The SLE1 Long Box is equipped with a standard 4.8-liter, V8, 285-horsepower engine that achieves 15-mpg in the city and 19-mpg on the highway. A 4-speed automatic transmission with overdrive is standard.

The 2007 GMC Truck Sierra Classic 1500 Regular Cab 4WD is a carryover from 2006.