Vehicle
2003 GMC Sierra 2500 HD parts
14 replacement parts are listed for the 2003 GMC Sierra 2500 HD. The most listed are inner fender well, tailgate handle and AC receiver drier, from brands such as Action Crash, Dorman and AC Delco. Every part shows the exact years, trims and engines it fits, so you can check the match before you order.
Year
Shop GMC Sierra 2500 HD parts by type
Finding the right part for your Sierra 2500 HD
This page shows parts listed for the 2003 model year only. Open a part to see its fitment table, which lists the trims, body styles and engines it was made for. Engines that appear in the fitment data include the 6.0L V8 and 6.6L V8 Turbo, so have your engine size handy.
Most listed Sierra 2500 HD parts
Part types with the most listings for the 2003 GMC Sierra 2500 HD: Inner Fender Well (3), Tailgate Handle (3), AC Receiver Drier (2), Console Lid (2), Hood (2), Brake Hydraulic Line Kit (1) and Spare Tire Hoist (1). Use the part type filter on this page to show one of them.
Before you order
Compare the part number on your old part with the listing where you can, and check whether the part is for the front or rear and the left or right side. Left means the driver side on a US vehicle. If your GMC Sierra 2500 HD has a trim or engine that is not in the fitment table, send us your VIN and we will confirm the fit.
Sierra 2500 HD questions
Do parts depend on the engine in my Sierra 2500 HD?
Many do. Engine-related parts such as ignition, fuel and cooling parts often differ by engine. The fitment data for the Sierra 2500 HD includes the 6.0L V8 and 6.6L V8 Turbo, and each part lists the engines it fits.
How do I know a part fits my 2003 GMC Sierra 2500 HD?
Check the fitment table on the part page for your year, trim, body style and engine. If the table does not list your exact version, contact us with your VIN before you order.