Removal Procedure

Important:  Care must be taken when removing the crankshaft position (CKP) sensor. Use penetrating oil and allow to soak around the CKP sensor before removing the sensor. Twist the sensor to break the O-ring seals loose. When removing the sensor, pull the sensor straight out of the engine block at the same angle the sensor was installed. Failure to be careful may result in sensor damage.

1. Raise the vehicle.
2. Disconnect the CKP sensor harness connector at the CKP sensor.
   Fig 1: CKP Sensor Harness Connector

   Courtesy of GENERAL MOTORS CORP.
3. Remove the fuel line bracket and retaining bolt. Refer to Fuel Hose/Pipes Replacement - Filter to Engine .
4. Use penetrating oil and allow to soak around the CKP sensor before removing the sensor.
5. Remove the CKP sensor bolt.
6. Prior to removal of the CKP sensor, twist the sensor back and forth.
7. Remove the CKP sensor.
   Fig 2: CKP Sensor

   Courtesy of GENERAL MOTORS CORP.
8. Inspect the CKP sensor for wear.

   Important:  The CKP sensor is designed to contact the reluctor wheel of the crankshaft. Wear may be noticeable on the end of the sensor.

9. Normal CKP sensor wear will be shown on the wear strips (1) and no wear will be shown on the sensor sensing element (2).
   Fig 3: CKP Sensor Wear Strips & Sensor Sensing Element

   Courtesy of GENERAL MOTORS CORP.
10. Excessive or abnormal sensor wear will be shown on the sensing element (2).
11. If excessive/abnormal wear is present, replace the sensor.
    Fig 4: CKP Sensor Wear Strips & Sensor Sensing Element (Abnormal Wear)

    Courtesy of GENERAL MOTORS CORP.