GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 Engine 🢒 Engine Controls - 2.6L and 3.2L 🢒 Crankshaft Position Sensor Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 818894 Size: SH
  2. Remove the bolt securing the crankshaft position (CKP) sensor to the engine block.
  3. Remove the CKP sensor and O-ring seal from the engine block.
  4. Lower the vehicle.
  5. Remove the following components depending on the RPO code in order to gain access to the CKP sensor pigtail:
    6. • (LHD)
    • The wiper motor module. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.
    • (RHD)
       - The left air inlet grill panel only. Refer to Air Inlet Grille Panel Replacement in Body Front End.

    Object Number: 799789 Size: SH
       - The front air inlet panel assembly bolts.
       - The front air inlet panel assembly.

    Object Number: 21513 Size: SH
  6. Disconnect the wiring harness connector from the CKP sensor pigtail (1).
  7. Disconnect the CKP sensor pigtail (1) from the retainer.
  8. Cut the tie strap securing the CKP sensor pigtail to the oil cooler pipes
  9. Securely attach a scrap piece of wire about 91 cm (36 in) long to the CKP sensor pigtail. Later, this piece will be used as a pull wire to guide the new sensor pigtail back through the same routing.
  10. Remove the CKP sensor pigtail. Observe the routing of the pigtail. Gently pull the CKP sensor pigtail down through the routing path and out.
  11. Disconnect the sensor from the pull wire.

Installation Procedure
  1. Securely attach the CKP sensor pigtail to the lower end of the pull wire.
  2. Use the pull wire as a guide in order to pull the sensor pigtail up through the routing path into position.
  3. Disconnect the pull wire from the sensor pigtail.

    4. Object Number: 21513 Size: SH
  4. Connect the CKP sensor pigtail (1) to the retainer.
  5. Connect the CKP sensor pigtail (1) to the wiring harness connector.
  6. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Thoroughly clean the mating surfaces of the CKP sensor and the engine block.

    8. Object Number: 818894 Size: SH
  8. Install the CKP sensor with a new O-ring seal into the engine block.

    9. Notice: Refer to Fastener Notice in the Preface section.

  9. Install the bolt securing the CKP sensor to the engine block.

    10. Tighten
    Tighten the CKP sensor bolt to 8 N·m (71 lb in).

  10. Check the harness for proper routing. Do not allow the wiring to come in contact with the exhaust manifold.
  11. Lower the vehicle.
  12. Secure the CKP sensor pigtail to the oil cooler pipes using a tie strap.
  13. Install the following components depending on the RPO code:
    14. • (LHD)
    • The wiper motor module. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.
    • (RHD)
       - The front air inlet panel assembly.

    Object Number: 799789 Size: SH
       - The front air inlet panel assembly bolts.

    Tighten
    Tighten the front air inlet panel assembly bolts to 6 N·m (53 lb in).

       - The left air inlet grill panel. Refer to Air Inlet Grille Panel Replacement in Body Front End.