MSD Ignition Coils Pro Power Series 1999 2006 GM LS Truck Style Red 8Pack 82868 leaf springs 5 Inlet Attachment Bolt On Heat 93356 FBHB 5 Inlet Attachment Bolt On Heat Shield Included Yes 8 V6 1980 GMC Caballero 229 3 MSD's engineering team have been working diligently the past year to improve our Multiple Spark Coils for the GM LS engine platform Year Make Model Submodel Engine Size 2001 2006 Chevrolet Silverado 2500 HD 4 8 V 1999 2000 Chevrolet Silverado 2500 4 8 V 2003 2006 Hummer H2 2001 2006 GMC Sierra 2500 HD 4 8 V 2001 2006 Chevrolet Silverado 3500 4 8 V 2003 2006 Chevrolet Silverado 1500 4 8 V 2002 2006 Cadillac Escalade EXT 2001 2006 Chevrolet Silverado 1500 HD 2001 2006 GMC Yukon XL 1500 4 8 V 2001 2006 GMC Sierra 1500 4 8 V 2002 2005 Cadillac Escalade 4 8 V 1999 2000 GMC Sierra 2500 4 8 V 2001 2004 GMC Sierra 2500 2001 2006 Chevrolet Suburban 2500 4 8 V 2001 2006 GMC Yukon XL 2500 4 8 V 2006 Cadillac Escalade 2001 2004 Chevrolet Silverado 2500 2001 2006 GMC Yukon 4 8 V 2003 2006 Cadillac Escalade ESV 2001 2006 GMC Sierra 1500 HD 2001 2006 GMC Sierra 3500 4 8 V 2000 GMC Yukon XL 2500 2000 Chevrolet Suburban 2500 2006 Chevrolet Suburban 1500 4 8 V