The CTA Manufacturing GM Camshaft Holding Tool, No. 1228, is used to hold a GM 1.5L engine. The bracket is installed onto both camshafts, and holds the assembled hex on both cams to maintain their relationship during timing chain, actuator, camshaft, and valve service. When cylinder No. 1 is at TDC, install the tool onto both camshafts to hold, and prevent chain jump when actuator bolts are removed or installed. Also, use when the timing chain is replaced, and re-establish the cams in the correct position after camshaft or valve service. Applications include Buick Encore 2016-2017, Chevy Cruze 2017, Malibu, Trax, and Volt 2016-2017.