WORKHORSE-2011-2008 4.8, 6.0 engines (8.5mm) //CHEVROLET TRUCKS & GMC TRUCKS-8 CYLINDER-2015-2009 4.8,5.3,6.0,6.2, except 2014-15 as listed above (8.5mm) //CHEVROLET TRUCKS & GMC TRUCKS-8 CYLINDER-2006-1999 4.8, 5.3, 6.0 engines--- except Express, Savana, Envoy, TrailblazeR (8.5mm) //HUMMER-2007-2002 H2 (6.0 engine) (8.5mm) // ISUZU, OPEL ISUZU, ASUNA (CANADA)-Trucks, SUVs, Amigo, Oasis, Hombre, Pickup, Rodeo,Trooper (8.5mm) //CADILLAC- 8 CYLINDER-2006-2002 Escalade (5.3 & 6.0 engines) (8.5mm)