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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Repair Instructions >> Front Wheel Speed Sensor Replacement (2WD) >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to Brake Dust Caution .
CAUTION: Refer to ABS Component Handling Caution .
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the wheel and tire. Refer to Tire and Wheel Removal and Installation .
    3. Fig 1: View Of Brake Caliper Bracket And Bolts
    GM1790688Courtesy of GENERAL MOTORS CORP.
  3. Remove the brake caliper bracket bolts (1).
    4. NOTE: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.
  4. Without disconnecting the brake hose, remove the brake caliper and bracket (2) as an assembly and support with heavy mechanics wire or equivalent.
    5. Fig 2: View Of ABS Speed Sensor Wiring Harness
    GM1253279Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note the location of the retainers for the wheel speed sensor to the upper control arm and the body to assist installation and ensure correct harness routing.
  5. Release the retainers securing the wheel speed sensor wiring harness to the upper control arm.
    6. Fig 3: View Of Wheel Speed Sensor To Body Mounting
    GM1253261Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the wheel speed sensor electrical connector.
  7. Remove the speed sensor electrical connector from the body.
    8. Fig 4: View Of Wheel Speed Sensor Harness Mounting Bolt And Wheel Hub/Bearing Bolts
    GM1790691Courtesy of GENERAL MOTORS CORP.
  8. Remove the wheel speed sensor harness bracket bolt (1).
    9. IMPORTANT: Note that the wheel speed sensor harness is positioned between the wheel hub/bearing bolts at the narrowest span facing upward.
  9. Using white or bright colored paint, mark the location of the speed sensor wiring harness to the steering knuckle.
  10. Remove the wheel hub/bearing bolts (2).
    11. Fig 5: View Of Wheel Hub/Speed Sensor Assembly
    GM1253296Courtesy of GENERAL MOTORS CORP.
  11. Remove the brake rotor and the wheel hub/bearing as an assembly while routing the wheel speed sensor harness through the steering knuckle.
    12. Fig 6: View Of Wheel Speed Sensor And Wheel Hub/Bearing Assembly
    GM1790694Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note that the wheel speed sensor harness is positioned at the narrowest span between the wheel hub/bearing bolt holes.
  12. Using white or bright colored paint, mark the location of the wheel speed sensor harness to the wheel hub/bearing assembly.
    13. IMPORTANT: DO NOT lever or pry against the wheel speed sensor tone wheel under the wheel speed sensor. Lever against the wheel hub ONLY.
  13. Using a suitable tool, pry or lever the wheel speed sensor off of the wheel hub/bearing housing.

    Discard the wheel speed sensor.

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