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 and support 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. Remove the wheel speed sensor connector (7) from the wheel speed sensor (6).
  5. Remove the harness grommet (3) from the strut bracket (5).
  6. Remove the harness grommet (1) from the rail bracket (2).
  7. Remove 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. Remove the master cylinder from the brake booster and carefully position the master cylinder out of the way. Refer the Master Cylinder Replacement in Hydraulic Brake.
  11. Remove the washer solvent reservoir and carefully position out of the way. Refer to Washer Pump/Reservoir Replacement in Wiper/Washer System.
  12. Cut the engine harness conduit to locate the 2 heat shrink sealed splices.

Installation Procedure

  1. Replace the wheel speed sensor jumper harness. Refer to Wiring Repairs in Wiring Systems.
  2. Route the wheel speed sensor jumper through the engine compartment to the wheel well.
  3. Install the washer solvent reservoir. Refer to Washer Pump/Reservoir Replacement in Wipers/Washer Systems.
  4. Install the master cylinder to the brake booster. Refer to Master Cylinder Replacement in Hydraulic Brake.

  5. Object Number: 531609  Size: SH
  6. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Install the wheel speed sensor connector (7) to the wheel speed sensor (6).
  8. Install the harness grommet (3) to the strut bracket (5).
  9. Install the harness grommet (1) to the rail bracket (2).
  10. Install 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 and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the wheel speed sensor connector (7) from the wheel speed sensor (6).
  4. Remove the harness grommet (3) from the strut bracket (5).
  5. Remove the harness grommet (1) from the rail bracket (2).
  6. Remove the harness clip (4) from the rail bracket (2).

  7. Object Number: 531625  Size: SH
  8. Cut the engine harness conduit (1) at the indicated location.

Installation Procedure

  1. Replace the wheel sped sensor jumper harness. Refer to Wiring Repairs in Wiring Repair.
  2. Route the wheel speed sensor jumper through the engine compartment to the wheel well.

  3. Object Number: 531609  Size: SH
  4. Install the wheel speed sensor connector (7) to the wheel speed sensor (6).
  5. Install the harness grommet (3) to the strut bracket (5).
  6. Install the harness grommet (1) to the rail bracket (2).
  7. Install the harness clip (4) to the rail bracket (2).
  8. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  9. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check - ABS .