917-033 Duolctrams Knock Sensor Wire Harness Kit-Compatible with Chevrolet Chevy GMC GM Cadillac Hummer Pontiac Replaces 12601822 12589867 10456603 12597415 12601822

Note:A knock sensor is located on the intake manifold, cylinder, or engine block. The purpose of the knock sensor is to sense unusual pulsations caused by the engine knock or detonation.When you replace the knock sensor please be careful the grime will fall into the cylinders when you pull the intake manifold off. Fits For the Following Vehicles: ENGINES: 4.8L / 5.3L / 5.7L / 6.0L / 8.1L Chevy Avalanche 1500 2002-2007 Avalanche 2500 2002-2006 C3500 Truck 2001-2002 Camaro 1999-2002 Corvette 1999-2003 Express 1500 / 2500 / 3500 Van 2003-2007 Silverado 1500 2001-2007 Silverado 1500 HD 2001-2007 Silverado 2500 2001-2004 Silverado 2500 HD 2001-2007 Silverado 3500 2001-2007 Silverado Hybrid 2004-2007 Suburban 1500 / 2500 2001-2007 Tahoe 2001-2007 Trailblazer EXT 2005 GMC GM C3500 Truck 2001-2002 Envoy 2005 Envoy XL 2003-2005 Envoy XUV 2005 Savana 1500 / 2500 / 3500 Van 2003-2007 Sierra 1500 2001-2007 Sierra 1500 HD 2001-2007 Sierra 2500 2001-2004 Sierra 2500 HD 2001-2007 Sierra 3500 2001-2007 Sierra Denali 1500 2002-2007 Sierra Hybrid 2005-2007 Yukon / Yukon XL 1500 / Yukon XL 2500 / Yukon XL Denali 2001-2007 Cadillac CTS 2004-2005 CTS-V 2004-2005 Escalade 2002-2007 Escalade ESV 2003-2007 Escalade EXT 2002-2007 Hummer H2 2005-2007 Pontiac Firebird 1999-2002