Sierra 1500 2WD V6-4.3L VIN X (2004)
6. Note the locating holes that the rotor screws were removed from:
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The rotor screw holes (1)
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The rotor locator pin holes (2)
7. Line up the square-cut hole in the vane wheel with the camshaft position (CMP) sensor.
8. Remove and discard the CMP sensor screws.
