Head Style :Hex, SemsScrew Size :M6-1.0Length :20MMAcross Flats :10MMWasher Diameter :17MMClass :9.8Finish :PhosphateOEM Number :(11514623 ; 11509816)GM :2021: Savana 3500, Savana 25002020: Savana 3500, Savana 25002019: Savana 3500, Savana 25002018: Savana 3500, Savana 25002017: Savana 3500, Savana 25002016: Savana 3500, Savana 25002015: Savana 3500, Savana 25002014: Yukon XL 1500, Savana 3500, Savana 2500, Savana 15002013: Yukon XL 2500, Yukon XL 1500, Savana 3500, Savana 2500, Savana 15002012: Yukon XL 2500, Yukon XL 1500, Canyon2011: Yukon XL 2500, Yukon XL 1500, Canyon2010: Yukon XL 2500, Yukon XL 1500, Canyon2009: Yukon XL 2500, Yukon XL 1500, Envoy, Canyon2008: Yukon XL 2500, Yukon XL 1500, Envoy, Canyon2007: Yukon XL 2500, Yukon XL 1500, Envoy, Canyon2006: Envoy XL, Envoy, Canyon2005: Envoy XUV, Envoy XL, Envoy, Canyon2004: Envoy XUV, Envoy XL, Envoy, Canyon2003: Envoy XL, Envoy2002: Envoy XL, Envoy2000: Jimmy1999: Jimmy1998: Jimmy1997: JimmyHummer :2010: H3T2009: H3T, H22008: H22007: H22006: H22005: H22004: H22003: H2