2010 GMC Sierra 2500 Wiring Harnesses

Genuine GM wiring harnesses for the 2010 GMC Sierra 2500, at wholesale prices. Harnesses carry the exact connectors and pinouts the modules expect, and they change with option content and build date. Catalog listing covering the light duty 2500 through 2004 and continuing as an alias for the 2500 HD.

Signs it is time

Rodent damage, corrosion at a connector, or a repair after collision work. On a heavy duty pickup, box length and cab style drive more part number splits here than the engine does.

Why order factory

• VIN verified fitment. We confirm the wiring harnesses number against your vehicle before it ships.
• Same day dispatch. Order wiring harnesses by mid-afternoon and it leaves our warehouse that day.
• Returns without a fight. We would rather fix a wiring harnesses order than argue about it.
• Covered by GM. On wiring harnesses that coverage is worth more than the price gap.
• Real wholesale. The same wiring harnesses your dealer sells, at a fraction over our cost.

Making sure it fits

The factory number ties back to GM engineering records, which is something no aftermarket catalog can offer. Give us the number stamped on the old part and we will trace what it superseded to. Same day shipping on in stock items, direct from one of the largest GM parts warehouses in the country.