Description: The fuel sensor monitors the ethanol content of your flex-fuel vehicle’s fuel. The flex-fuel sensor signal is used by the engine control module to adjust the air/fuel mixture and spark advance for efficient operation. Kit Includes: 1 x Flex Fuel Sensor Part Number: 12570260,12568450,10371025 Application: For Chevrolet Avalanche 1500 5.3L 2002-2005 For Chevrolet S10 2.2L 2000-2002 For Chevrolet Silverado 1500 4.3L 2000-2005 For Chevrolet Silverado 1500 4.8L 2000-2005 For Chevrolet Silverado 1500 5.3L 2000-2005 For Chevrolet Silverado 1500 6.0L 2003-2005 For Chevrolet Suburban 1500 5.3L 2000-2005 For Chevrolet Suburban 1500 5.7L 2000-2002 For Chevrolet Tahoe 4.8L 2000-2005 For Chevrolet Tahoe 5.3L 2000-2005 For Chevrolet Tahoe 5.7L 2000 For GMC Sierra 1500 4.3L 2000-2005 For GMC Sierra 1500 4.8L 2000-2005 For GMC Sierra 1500 5.3L 2000-2005 For GMC Sierra 1500 6.0L 2001-2005 For GMC Sonoma 2.2L 2000-2002 For GMC Yukon 4.8L 2000-2005 For GMC Yukon 5.3L 2000-2005 For GMC Yukon 5.7L 2000 For GMC Yukon 6.0L 2001-2005 For GMC Yukon XL 1500 5.3L 2000-2005 For GMC Yukon XL 1500 6.0L 2001-2005 All with 5.3 “Z” engine code. This sensor can eliminate engine error codes P176, P0177, P0178, P0179. *This item is an aftermarket item with high quality *Please calibrate your item after installation *Professional installation is highly recommended (instructions not included) *If we can help you, please contact us via ebay message. We are always here for you.