Looking for aftermarket parts to modify or upgrade your GMC Sierra 2500 HD with wiring harnesses? At Tunersports.com we carry a huge selection of the top name brand performance wiring harnesse parts and accessories for your Sierra 2500 HD.
Whether you have a 2001 or 2019 GMC Sierra 2500 HD in Base to WT trim we have you covered. We have 4 wiring harnesses available to mod your Sierra 2500 HD. All parts have free shipping to the Continental US 48 States.
 SHIPS FROM MANUFACTURER 301108FAST offers several main harness options to accommodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also handles communication between the ECU and ignition... FAST Wiring Harness Main LS1LS2L 2001-2001 GMC Sierra 2500 HD SL / SLE / SLT $418.95 |
 SHIPS FROM MANUFACTURER 301972The XIM Ignition Controller allows you to easily control all aspects of the ignition system when used with a FAST EZ-EFI 2.0, XFI 2.0 or XFI Sportsman. A number of different wiring kits are available for late model GM LS platforms, 5.7 and 6.1 Chrysler Hemis and Ford?s mod motor or the Coyote series... FAST Wiring Harness Xim For LS1 2001-2001 GMC Sierra 2500 HD SL / SLE / SLT $318.95 |
 IN STOCK 40-0005SFront Sensor Relocator by Westin®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind this product by Westin will last a lifetime. It will meet your needs and deliver great quality at an affordable cos... Westin 2014-2018 Chevrolet/GMC Truck/SUV Sensor Relocator - Black 2014-2014 GMC Sierra 2500 HD WT 2014-2019 GMC Sierra 2500 HD Denali / SLE / SLT 2015-2019 GMC Sierra 2500 HD Base $93.99 |
 SHIPS FROM MANUFACTURER 45-0000SFront Sensor Relocator by Westin®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind this product by Westin will last a lifetime. It will meet your needs and deliver great quality at an affordable cos... Westin 2014-2018 Chevrolet/GMC Truck/SUV Sensor Relocator - Polished 2014-2014 GMC Sierra 2500 HD WT 2014-2019 GMC Sierra 2500 HD Denali / SLE / SLT 2015-2019 GMC Sierra 2500 HD Base $106.99 |