Setting Camshaft Timing
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Setting the camshaft timing is necessary whenever the camshaft drive system has been disturbed such that the relationship between any chain and sprocket has been lost. Even when only one sprocket is involved, multiple crankshaft rotations will not produce conditions where correct timing can be confirmed.
Follow the left camshaft timing chain assembly replacement procedure to reset the camshaft timing. Camshaft Timing Chain Assembly Replacement - Left Side