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GMC Sierra 2500 HD Ignition Wiring and Cables

This page brings together ignition wiring and cables for the GMC Sierra 2500 HD, covering model years 2001–2007. The range centers on ignition knock sensor harnesses and related wiring components designed to fit this truck. Choose your model year above and this page keeps only the ignition wiring and cables that fit your GMC Sierra 2500 HD. 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 HD

  • Ignition Knock (Detonation) Sensor Harnesses

The widest selection here comes from Standard Motor Products, Dorman, and Holstein, each offering ignition wiring and cable components across the 2001–2007 Sierra 2500 HD range. Other categories GMC Sierra 2500 HD owners shop for: GMC Sierra 2500 HD Shocks and Struts, GMC Sierra 2500 HD Exterior Lights and GMC Sierra 2500 HD Springs and Suspension Parts, or browse all GMC Sierra 2500 HD parts and accessories.