Flex Fuel Tank Gas Cap is a direct fit for the following:

2009-2011 Cadillac Escalade
2009-2011 Cadillac Escalade ESV
2007-2011 Chevrolet Avalanche
2007-2011 Chevrolet Silverado 1500
2007-2011 Chevrolet Suburban 1500
2007-2011 Chevrolet Tahoe
2007-2011 GMC Sierra 1500
2007-2011 GMC Yukon
2007-2011 GMC Yukon XL 1500

Genuine GM Part Number: 20915990