Feature 1Its role is to determine the degree of vibration of the engine, used to adjust the ignition advance angle when the engine produces knock. 2The function of the knock sensor is to transmit engine knock to the electronic control module in the form of an electrical signal. 3Easy to install and reliable performance, replace OE number for reference is 104566030, 12601822, 12589867. 4Based on the original factory specifications, a direct replacement for the old or broken one. 5Especially designed fit for Chevy Avalanche 1500 2002-2007.Condition: 100% Brand NewItem Type: Knock SensorMaterial: ABSColor: As Pictures ShownOEM: 104566030, 12601822, 12589867Fitment:Fit for Buick Rainier 2005Fit for Cadillac CTS 2004-2005Fit for Cadillac CTS-V 2004-2005Fit for Cadillac Escalade 2002-2007Fit for Cadillac Escalade ESV 2003-2007Fit for Cadillac Escalade EXT 2002-2007Fit for Cadillac STS 2005Fit for Chevy Avalanche 1500 2002-2007Fit for Chevy Avalanche 2500 2002-2006Fit for Chevy C3500 2001-2002Fit for Chevy Camaro 1999-2002Fit for Chevy Corvette 1999-2003Fit for Chevy Express 1500 Van 2003-2007Fit for Chevy Express 2500 Van 2003-2007Fit for Chevy Express 3500 Van 2003-2007Fit for Chevy Silverado 1500 2001-2007Fit for Chevy Silverado 2500 HD 2001-2004Fit for Chevy Silverado 2500 HD Classic 2007Fit for Chevy Silverado 2500 HD 2001-2006Fit for Chevy Silverado 3500 HD 2001-2006Fit for Chevy Silverado 3500 HD Classic 2007Fit for Chevy Silverado Hybrid 2004-2007Fit for Chevy Silverado Hybrid Classic 2007Fit for Chevy Suburban 1500 2001-2007Fit for Chevy Suburban 2500 2001-2007Fit for Chevy Tahoe 2001-2007Fit for Chevy Trailblazer EXT 2005Fit for GMC C3500 2001-2002Fit for GMC Envoy 2005Fit for GMC Envoy XL 2003-2005Fit for GMC Envoy XUV 2005Fit for GMC Savana 1500 Van 2003-2007Fit for GMC Savana 2500 Van 2003-2007Fit for GMC Savana 3500 Van 2003-2007Fit for GMC Sierra 1500 2001-2006Fit for GMC Sierra 1500 Classic 2007Fit for GMC Sierra 1500 2005-2007Fit for GMC Sierra 1500 2001-2003Fit for GMC Sierra 2500 HD 2001-2004Fit for GMC Sierra 2500 HD Classic 2007Fit for GMC Sierra 2500 HD 2001-2006Fit for GMC Sierra 3500 Classic 2007Fit for GMC Sierra 3500 HD 2001-2006Fit for GMC Sierra Denali 1500 2002-2006Fit for GMC Sierra Denali 1500 Classic 2007Fit for GMC Sierra Hybrid Classic 2007Fit for GMC Sierra Hybrid 2005-2006Fit for GMC Yukon 2001-2007Fit for GMC Yukon XL 1500 2001-2007Fit for GMC Yukon XL 2500 2001-2007Fit for GMC Yukon XL Denali 2001-2007Fit for Hummer H2 2005-2007Fit for Pontiac Firebird 1999-2002Fit for Pontiac GTO 2004Fit for Saab 9-7X 2005 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Knock Sensor Harness2 x Knock SensorNote1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!