K 1500 Truck 4WD V8-4.8L VIN V (2003)
Crankshaft Position Sensor: Description and Operation
Crankshaft Position (CKP) Sensor
The crankshaft position (CKP) sensor is a three wire sensor based on the magneto resistive principle.
A magneto resistive sensor uses two magnetic pickups between a permanent magnet. As an element such as a reluctor wheel passes the magnets the
resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse.
The PCM supplies a 12-volt, low reference, and signal circuit to the CKP sensor. The sensor returns a digital ON/OFF pulse 24 times per crankshaft
revolution.
