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GMC Sierra 2500 Brake Wiring Harnesses and Parts

This page brings together brake wiring harnesses and parts for the GMC Sierra 2500, covering model years 1999–2009. The range includes harness assemblies and related components designed to work with the Sierra 2500's brake and trailer systems. Choose your model year above and this page keeps only the brake wiring harnesses and parts that fit your GMC Sierra 2500. Each listing is matched to our vehicle fitment data before it appears here.

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What's here for your GMC Sierra 2500

  • Body wiring harness assemblies
  • Brake wiring connectors and adapters
  • Trailer brake wiring components
  • Wiring harness repair and replacement parts

The widest selection of brake wiring harnesses and parts for the GMC Sierra 2500 here comes from CURT, Husky Towing, SKF, and Standard Motor Products. Other categories GMC Sierra 2500 owners shop for: GMC Sierra 2500 Exterior Lights, GMC Sierra 2500 Doors and Door Parts and GMC Sierra 2500 Body and Paint Equipment, or browse all GMC Sierra 2500 parts and accessories.