Engine Component Description: Camshaft
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Two camshafts are used, one for all intake valves, the other for all exhaust valves. The camshafts are cast iron. The camshaft are driven by the crankshaft over the camshaft timing chain.