Sierra 1500 2WD V8-5.3L VIN B HO (2006)
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Camshaft Position Sensor: Description and Operation
CAMSHAFT POSITION (CMP) SENSOR
The CMP sensor is also a magneto resistive sensor, with the same type of circuits as the CKP sensor. The CMP sensor signal is a digital ON/OFF pulse,
output once per revolution of the camshaft. The CMP sensor information is used by the PCM to determine the position of the valve train relative to the
CKP.