S10 Pickup, Sonoma 2000-2004

Wheel Speed Sensors

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Removal & Installation



2-Wheel Drive
  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle securely on jackstands.
  4.  
  5. Remove tire and wheel.
  6.  
  7. Remove brake caliper.
  8.  
  9. Remove the hub and rotor.
  10.  
  11. Remove wheel speed sensor cable electrical connector.
  12.  
  13. Remove 13 mm bolt and nut fastening the wheel speed sensor harness clip to the front side of the upper control arm.
  14.  
  15. Remove clips from the wheel speed sensor wire. Save the clips for the sensor wire.
  16.  
  17. Remove two 13 mm wheel speed sensor mounting bolts.
  18.  
  19. Remove two 11 mm splash shield mounting bolts.
  20.  
  21. Remove wheel speed sensor and splash shield assembly.
  22.  
  23. Remove splash shield gasket.
  24.  
  25. Clean gasket and knuckle surfaces thoroughly with a dry cloth.
  26.  

To install:

  1. Install splash shield gasket.
  2.  
  3. Install wheel speed sensor and splash shield assembly (6).
  4.  
  5. Install two 11 mm splash shield mounting bolts. Tighten the splash shield mounting bolts to 19 ft. lbs. (26 Nm). Tighten the speed sensor mounting bolts to 13 ft. lbs. (18 Nm).
  6.  
  7. Install harness clips to the wheel speed sensor wire.
  8.  
  9. Locate the clip directly centered over the white paint mark on the wheel speed sensor cable.
  10.  
  11. Install harness clips and 13 mm fastening bolt and nut to the front side of the upper control arm
  12.  
  13. Install the hub and rotor.
  14.  
  15. Install brake caliper.
  16.  
  17. Install tire and wheel.
  18.  
  19. Lower the vehicle.
  20.  
  21. Connect the negative battery cable.
  22.  

4-Wheel Drive
  1. Disconnect the negative battery cable.
  2.  
  3. Raise the vehicle.
  4.  
  5. Remove tire and wheel.
  6.  
  7. Remove brake caliper.
  8.  
  9. Remove the hub and rotor.
  10.  
  11. Remove wheel speed sensor mounting clip on the control arm.
  12.  
  13. Remove wheel speed sensor mounting clip on the frame rail.
  14.  
  15. Disconnect the wheel speed sensor electrical connector.
  16.  
  17. Remove the sensor mounting screw.
    WARNING
    The wheel speed sensor mounts into a bore that leads to the center of the sealed bearing. Use caution when cleaning or working around the bore. Do not contaminate the lubricant inside the sealed bearing. Failure to do so can lead to premature bearing failure.

  18.  
  19. Remove wheel speed sensor from hub and bearing assembly. Carefully remove the sensor by pulling it straight out of the bore. DO NOT use a screwdriver, or other device. Prying will cause the sensor body to break off in the bore.
    WARNING
    Do not attempt to remove the stainless steel shim from the bearing assembly. The shim is permanently attached. If the shim is damaged or bent, replace the bearing assembly. Failure to comply will result in diminished sensor and ABS performance.

  20.  

To install:


WARNING
The new speed sensor will have a new O-ring. Dispose of the old O-ring. Lubricate the new O-ring lightly with bearing grease prior to installation. You may also lubricate the sensor just above and below the new O-ring. DO NOT lubricate the bore.

  1. Install sensor into the hub and bearing assembly and tighten the sensor mounting screw to 13 ft. lbs. (18 Nm).
    NOTE
    The new sensor has new mounting clips already installed on the wire. DO NOT reuse the old clips.

  2.  
  3. Connect the wheel speed sensor electrical connector (2).
  4.  
  5. Install wheel speed sensor mounting clip to the frame rail.
  6.  
  7. Install the wheel speed sensor mounting clip to the control arm.
  8.  
  9. Install the hub and rotor.
  10.  
  11. Install brake caliper.
  12.  
  13. Install tire and wheel.
  14.  
  15. Lower the vehicle.
  16.  
  17. Connect the negative battery cable.
  18.  

 
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