GM Service Manual Online
For 1990-2009 cars only

Camshaft Holding Tool Caution for Chevrolet Colorado Pickup - 4WD 2007

Caution: The camshaft holding tools must be installed on the camshafts to prevent camshaft rotation. When performing service to the valve train and/or timing components, valve spring pressure can cause the camshafts to rotate unexpectedly and can cause personal injury.