Find a Car
The 2003 Sierra 2500 HD Regular Cab is a 2-door, 3-passenger full size pickup, available in 6 trims, ranging from the Work Truck Long Box 2WD to the SLE Long Box 4WD. The 2003 Sierra 2500 HD Regular Cab's closest competitors include the Chevrolet Silverado 2500HD Crew Cab, the Dodge Ram 3500 Regular Cab 4X2, and the Ford F-350 SD SuperCab 4x4.
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 2003 Sierra 2500 HD Regular Cab is freshened for 2003.