Impala V6-3.9L (2007)
Timing Component Alignment Marks: Locations
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Align the crankshaft timing mark (1) to the timing mark on the bottom of the timing chain tensioner (2).
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Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
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Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain tensioner (3).
