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GMC Sierra 1500 Ignition Wiring and Cables

This page brings together ignition wiring and cables for the GMC Sierra 1500, covering model years 1999 through 2008. The range centers on ignition knock sensor harnesses, the wiring components that connect detonation sensors into the engine management system. Choose your model year above and this page keeps only the ignition wiring and cables that fit your GMC Sierra 1500. Each listing is matched to our vehicle fitment data before it appears here.

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Picture of Dorman Engine Knock Sensor Harness

Dorman Engine Knock Sensor Harness

63 reviews
Vehicle Specific
from $17
In Stock (10+)
Picture for manufacturer Dorman
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Best Seller Free Shipping
Picture of Holstein Ignition Knock Sensor Wiring Harness

Holstein Ignition Knock Sensor Wiring Harness

33 reviews
Vehicle Specific
from $11
In Stock (10+)
Picture for manufacturer Holstein
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What's here for your GMC Sierra 1500

  • Ignition knock (detonation) sensor harnesses

The widest selection here comes from Standard Motor Products, Dorman, and Holstein, three suppliers with broad coverage across the 1999–2008 GMC Sierra 1500 model range. Other categories GMC Sierra 1500 owners shop for: GMC Sierra 1500 Shocks and Struts, GMC Sierra 1500 Springs and Suspension Parts and GMC Sierra 1500 Exterior Lights, or browse all GMC Sierra 1500 parts and accessories.