Compatibility : 2002-2006 Escalade, Escalade EXT; 2003 - 2006 Escalade ESV; 2002 - 2006 Chevy Avalanche 1500, 2500; 1999 - 2006 Chevy Silverado 1500; 2007 Chevy Silverado 1500 Classic, 1500 HD Classic; 2001- 2006 Chevy Silverado 1500 HD, 2500 HD, 3500; 1999 - 2004 Chevy Silverado 2500; 2007 Chevy Silverado 2500 HD Classic, 3500 Classic. Compatibility : 2000 - 2006 Chevy Suburban 1500, 2500, Tahoe; 1999 - 2006 GMC Sierra 1500; 2007 GMC Sierra 1500 Classic, 1500 HD Classic; 2001 - 2006 GMC Sierra 1500 HD, 2500 HD, 3500; 1999 - 2004 GMC Sierra 2500; 2007 GMC Sierra 2500 HD Classic, 3500 Classic; 2000 - 2006 GMC Yukon, Yukon XL 1500, 2500. Replace Part Number : 15-81647, PM2728, 89019321, 35143, 1581647, 35143, PM2728, 52400424, 89019302, 89019181, 89019182, 89018759, 15-8769, 15-81122. Easy to Install : Simply remove the old blower motor and put the new one in. It is also a advisable to replace your blower motor relay/resistor with a new one when you replace your blower motor. 2002-2006 Escalade, Escalade EXT 2003-2006 Escalade ESV 2002-2006 Chevy Avalanche 1500, 2500 1999-2006 Chevy Silverado 1500 2007 Chevy Silverado 1500 Classic, 1500 HD Classic 2001-2006 Chevy Silverado 1500 HD, 2500 HD, 3500 1999-2004 Chevy Silverado 2500 2007 Chevy Silverado 2500 HD Classic, 3500 Classic 2000-2006 Chevy Suburban 1500, 2500, Tahoe 1999-2006 GMC Sierra 1500 2007 GMC Sierra 1500 Classic, 1500 HD Classic 2001-2006 GMC Sierra 1500 HD, 2500 HD, 3500 1999-2004 GMC Sierra 2500 2007 GMC Sierra 2500 HD Classic, 3500 Classic 2000-2006 GMC Yukon, Yukon XL 1500, 2500