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  • Gm Service Guy Knock Sensor Wire Harness Kit with intake manifold gasket for GM LS1, LS6, LQ9 engines, showing wiring and gasket components.
  • GM LS1, LS6, LQ9 knock sensor wire harness kit with intake manifold gasket, includes OE part numbers 12589867 and 12601822.
  • Gm Service Guy knock sensor wire harness kit with intake manifold gasket for GM LS1, LS6, LQ9 engines, close-up of parts.
  • GM LS1 LS6 LQ9 knock sensor wire harness kit with intake manifold gasket, including OE# 12589867 and 12601822, for 4.8L to 6.0L engines
  • GM LS1, LS6, LQ9 knock sensor wire harness kit with intake manifold gasket, showing installed sensors and wiring for engine compatibility
  • GM LS1, LS6, LQ9 knock sensor wire harness kit with intake manifold gasket, compatible with 4.8L, 5.3L, 5.7L and 6.0L engines
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Gm Service Guy

Knock Sensor Wire Harness Kit with Intake Manifold Gasket for GM LS1, LS6 & LQ9 4.8L, 5.3L, 5.7L & 6.0L – OE# 12589867, 12601822

Knock Sensor Wire Harness Kit with Intake Manifold Gasket for GM LS1, LS6 & LQ9 4.8L, 5.3L, 5.7L & 6.0L – OE# 12589867, 12601822

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Description
Item Specifics

Fix Knock Sensor Codes on Your GM LS Engine — Complete Kit

This knock sensor wire harness kit with intake manifold gasket is a complete solution for GM LS1, LS6, and LQ9 engines. A common failure point on these engines, the knock sensor harness degrades over time causing P0327/P0332 codes, rough running, and reduced performance. This kit includes everything needed for a clean repair in one order.

Note: Verify OE part numbers against your vehicle before ordering.

Specifications

  • OE / Interchange Part Numbers: 12589867, 12601822, 213-3521, 89060413, 10456603, 12575869, 12597415, 81045-66030, 917-033, MS96587
  • Kit Includes: Knock sensor wire harness + intake manifold gasket set
  • Compatible Engine Families: LS1, LS6, LQ9
  • Compatible Engine Sizes: 4.8L, 5.3L, 5.7L, 6.0L

Compatible Vehicles

Chevrolet:

  • Corvette (1999–2004)
  • Camaro 5.7L LS1 (1999–2002)
  • Express 1500 / 2500 / 3500 — 4.8L, 5.3L, 6.0L (2003–2007)
  • Avalanche — 4.8L, 5.3L, 6.0L (2002–2006)
  • Silverado 1500 / 2500 — 4.3L, 4.8L, 6.0L (1999–2006)
  • Silverado 3500 — 4.8L, 5.3L, 6.0L (2001–2006)
  • Silverado Classic 1500 / 2500 / 3500 — 4.8L, 5.3L, 6.0L (2007)
  • SSR 5.3L (2004–2005)
  • Trailblazer 5.3L (2003–2005)

GMC:

  • Envoy 5.3L (2003–2005)
  • Sierra 1500 / 2500 — 4.3L, 4.8L, 6.0L (1999–2006)
  • Sierra 3500 — 4.8L, 5.3L, 6.0L (2001–2006)
  • Sierra Classic 1500 / 2500 / 3500 — 4.8L, 5.3L, 6.0L (2007)
  • Yukon / Yukon XL — 4.8L, 5.3L (2000–2006)

Cadillac:

  • Escalade — 4.8L, 5.3L, 6.0L (2002–2006)
  • Escalade EXT — 4.8L, 5.3L, 6.0L (2002–2006)
  • Escalade ESV — 4.8L, 5.3L, 6.0L (2003–2006)
  • STS (2005)

Pontiac:

  • Firebird 5.7L LS1 (1999–2002)
  • GTO (2004)

Other:

  • Oldsmobile Bravada 5.3L (2003–2004)
  • Buick Rainier 5.3L (2004–2005)
  • Hummer H2 (2003–2007)

Symptoms of a Failing Knock Sensor Harness

  • Check engine light — P0327 or P0332 codes
  • Reduced engine power or rough running
  • Poor fuel economy
  • Engine hesitation or pinging under load

Why You'll Love It

  • ✅ Complete kit — harness and intake manifold gasket in one order
  • ✅ Fixes P0327 / P0332 knock sensor codes
  • ✅ Broad compatibility across GM LS1, LS6, and LQ9 engines
  • ✅ Matches 10 OE cross-reference part numbers
  • ✅ Verify fitment with your OE number before ordering

Description

Item Specifics

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