GM Service Manual Online
For 1990-2009 cars only

Front Wheel Speed Sensor Wiring Harness Replacement Left

Removal Procedure


    Object Number: 531609  Size: SH

    Important: The wheel speed sensor wiring is included in the engine harness. The wiring between the wheel speed sensor and the heat shrink sealed splices is high-flex cable and must not be repaired or spliced. This procedure replaces the high-flex cable with a jumper harness from a supplied repair kit.

  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the left front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Disconnect the wheel speed sensor connector (7) from the wheel speed sensor (6).
  5. Disconnect the harness grommet (3) from the strut bracket (5).
  6. Disconnect the harness grommet (1) from the rail bracket (2).
  7. Disconnect the harness clip (4) from the rail bracket (2).
  8. Route the wheel speed sensor wiring (8) through the top of the engine compartment.
  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  10. Object Number: 531617  Size: SH
  11. Remove the ground wire from the top of the transmission near the shift lever.
  12. If equipped with a 4.0L remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 4.0L.
  13. Pull the harness out above the air cleaner assembly for access.
  14. Strip back the conduit to gain access to the 2 heat shrink sealed splices.

Installation Procedure


    Object Number: 531621  Size: SH
  1. Replace the wheel speed sensor jumper harness. Refer to Wiring Repairs in Wiring Repair.
  2. Route the wheel speed sensor jumper (1) through the engine compartment to the wheel well.
  3. If equipped with a 4.0L install the ground wire and bolt to the top of the transmission near the shift lever. Refer to Transmission Replacement in Automatic Transaxle or Transmission Replacement in Automatic Transaxle.
  4. If equipped with a 4.0L install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 4.0L.

  5. Object Number: 531609  Size: SH
  6. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Connect the wheel speed sensor connector (7) to the wheel speed sensor (6).
  8. Connect the harness grommet (3) to the strut bracket (5).
  9. Connect the harness grommet (1) to the rail bracket (2).
  10. Connect the harness clip (4) the rail bracket (2).
  11. Install the left front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  13. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check - ABS .

Front Wheel Speed Sensor Wiring Harness Replacement Right

Removal Procedure


    Object Number: 531609  Size: SH

    Important: The wheel speed sensor wiring is included in the engine harness. The wiring between the wheel speed sensor and the heat shrink sealed splices is high-flex cable and must not be repaired or spliced. This procedure replaces the high-flex cable with a jumper harness from a supplied repair kit.

  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Disconnect the wheel speed sensor connector (7) from the wheel speed sensor (6).
  5. Disconnect the harness grommet (3) from the strut bracket (5).
  6. Disconnect the harness grommet (1) from the rail bracket (2).
  7. Disconnect the harness clip (4) from the rail bracket (2).
  8. Complete the following depending on engine RPO:

  9. Object Number: 531625  Size: SH
    • If equipped with LX5 complete the following:
        1. Disconnect the vehicle speed sensor electrical connector.
        2. Cut the engine harness conduit (1) at the shown location.
    • If equipped with L47 complete the following:
        1. Disconnect the vehicle speed sensor electrical connector.
        2. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
        3. Remove the engine harness from the engine harness retainer clip and carefully pull the harness upward to access the wheel speed sensor harness.
        4. Cut the engine harness conduit to locate the 2 heat shrink sealed splices.

Installation Procedure


    Object Number: 531612  Size: SH
  1. Replace the wheel speed sensor jumper harness. Refer to Wiring Repairs in Wiring Repair.
  2. Complete the following depending on engine RPO:

  3. Object Number: 531625  Size: SH
    2.1. If equipped with LX5 complete the following:
    2.2. Connect the vehicle speed sensor electrical connector.
    2.3. If equipped with L47 complete the following:
             2.3.1. Route the wheel speed sensor jumper through the engine compartment to the wheel well.
             2.3.2. Connect the engine harness to the engine harness retainer.
             2.3.3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
             2.3.4. Connect the vehicle speed sensor electrical connector.

    Object Number: 531609  Size: SH
  4. Connect the wheel speed sensor connector (7) to the wheel speed sensor (6).
  5. Connect the harness grommet (3) to the strut bracket (5).
  6. Connect the harness grommet (1) to the rail bracket (2).
  7. Connect the harness clip (4) to the rail bracket (2).
  8. Install the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  10. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check - ABS .