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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Tahoe - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Camshaft Position Sensor Replacement

Camshaft Position Sensor Replacement Except RPOs LY2, LC9, Ly5 and LMG

Removal Procedure

Note: Clean the area around the camshaft position (CMP) sensor before removal in order to prevent debris from entering the engine.


    Object Number: 1697734 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the engine wiring harness electrical connector (1) from the CMP sensor wire harness.

    3. Object Number: 1658163 Size: SH

    Note: The crankshaft harmonic balancer has been removed for illustration purposes only. Do not remove the balancer.

  3. Remove the 2 CMP sensor wire harness bolts (738).
  4. Loosen the top CMP sensor wire harness bolt using a box wrench through the harmonic balancer opening. Loosen the bolt 2 turns.
  5. Disconnect the CMP sensor wire harness electrical connectors from the CMP sensor and the CMP actuator magnet.
  6. Remove the CMP sensor wire harness (737).

    7. Object Number: 1658166 Size: SH
  7. Remove the CMP sensor (703) and O-ring seal (704).

Installation Procedure

    Object Number: 1658166 Size: SH
  1. Inspect the CMP O-ring seal for cuts or damage. If the seal is not cut or damaged, it may be used again.
  2. Lubricate the O-ring seal with clean engine oil.
  3. Install the O-ring seal (704) onto the sensor.
  4. Instal the CMP sensor (703) to the front cover.

    5. Object Number: 1658163 Size: SH
  5. Install the CMP sensor wire harness (737).
  6. Connect the CMP sensor wire harness electrical connectors to the CMP sensor and the CMP actuator magnet.

    7. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the 2 CMP sensor wire harness bolts (738).

    8. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  8. Finger tighten the top CMP sensor wire harness bolt. Using a box wrench through an opening in the harmonic balancer, tighten the bolt an additional 1/4 turn (90 degrees).

    9. Object Number: 1697734 Size: SH
  9. Connect the engine wiring harness electrical connector (1) to the CMP sensor wire harness.
  10. Lower the vehicle.

Camshaft Position Sensor Replacement RPOs LY2, LC9, LY5, LMG

Removal Procedure

Note: Clean the area around the camshaft position (CMP) sensor before removal in order to prevent debris from entering the engine.


    Object Number: 1697734 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the engine wiring harness electrical connector (1) from the CMP sensor wire harness.

    3. Object Number: 1402111 Size: SH
  3. Remove the CMP sensor wire harness bolts (705, and 738).
  4. Remove the CMP sensor wire harness (737).
  5. Remove the CMP sensor (703) and O-ring seal (704).

Installation Procedure

    Object Number: 1402111 Size: SH
  1. Inspect the CMP O-ring seal for cuts or damage. If the seal is not cut or damaged, it may be used again.
  2. Lubricate the O-ring seal with clean engine oil.
  3. Install the O-ring seal (704) onto the sensor.
  4. Instal the CMP sensor (703) to the front cover.
  5. Install the CMP sensor wire harness (737).

    6. Caution: Refer to Fastener Caution in the Preface section.

  6. Install the CMP sensor wire harness bolts (705, and 738).

    7. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1697734 Size: SH
  7. Connect the engine wiring harness electrical connector (1) to the CMP sensor wire harness.
  8. Lower the vehicle.