Sierra 3500 4WD V8-6.0L (2008)
7. Compress the timing chain tensioner guide and install the EN 46330 .
Important:
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Properly locate the CMP actuator onto the locating pin of the camshaft.
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The sprocket teeth and timing chain teeth must mesh.
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The camshaft and the crankshaft sprocket alignment mark MUST be aligned properly.
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Do not use the CMP solenoid valve again. Install a NEW valve during assembly.
8. Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of the camshaft.
