Fits For In-line 6 Cylinder 2.8L 4 Cylinder 2004-2007 Chevrolet Colorado GMC Canyon 2002 GMT360 (Chevy Trail Blazer, GMC Envoy, Olds Bravada). •2004-2006 GMC Canyon 2.8L. (4) Holding the camshafts at T.D.C. to ensure proper timing when servicing cams, gears, chains, etc. is important.