Sierra 1500 2WD V8-5.3L (2008)
4. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are aligned.
Notice: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the
valves.
5. Remove the camshaft sprocket bolt (206).
6. Remove the camshaft sprocket (205) and timing chain (208).
7. Remove the timing chain tension bolts (231) and tensioner (232).