Replacement Gas Cap Compatible with Chevrolet, GMC, Buick and Cadillac. This replacement gas cap is designed to replace cap model ‎20915842. Made from automotive grade HDPE with NBR o-rings proven to stand up to all gasoline grades including ethanol blended fuels. Compatible with the followign vehicles: CHEVROLET Avalanche 1500 (2007-2009) Avalanche 2500 (2004-2006) Silverado 1500 (2004–2011) Silverado 1500 Classic (2007) Silverado 1500 HD (2005-2007) Silverado 2500 (2004) Silverado 2500 Classic (2007) Silverado 2500 HD (2004–2011) Silverado 3500 (2004-2006) Silverado 3500 Classic (2007) Silverado 3500 HD (2007-2010) Suburban 1500 (2004-2009) Suburban 2500 (2004-2011) Tahoe (2004–2011) Traverse (2009–2010) GMC Acadia (2007–2010) Sierra 1500 (2004–2011) Sierra 1500 Classic (2007) Sierra 1500 HD (2005-2007) Sierra 2500 (2004) Sierra 2500 Classic (2007) Sierra 2500 HD (2007) Sierra 3500 (2004-2006) Sierra 3500 Classic (2007) Sierra 3500 HD (2004–2011) Yukon (2004-2011) Yukon XL (2004-2009) Yukon XL 2500 (2004-2011) Buick Enclave (2008-2011) Cadillac Escalade (2004-2011) Escalade ESV/ETX (2004-2008) Saturn Outlook (2007-2010)