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Home >> Chevrolet >> 2004 >> Chevy Express H1500, Van Cargo >> Repair and Diagnosis >> Brakes >> Antilock Brake System, Traction Control System & Stability Control System >> Repair Instructions >> Wheel Speed Sensor Replacement (2WD) >> Installation Procedure
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Installation Procedure

  1. Plug the WSS bore to prevent debris from falling into the hub.
  2. Using a wire brush or equivalent, clean the WSS mounting surface on the hub to remove any rust or corrosion.
  3. Apply a thin layer of wheel bearing lubricant, GM P/N 01051344 to the hub surface and the sensor O-ring prior to sensor installation.
  4. Install the WSS (5) into the hub/bearing assembly (4) shown on the 2500/3500 series. Ensure that the sensor is seated flat against the hub.
  5. Fig 1: Wheel Speed Sensor & Hub/Bearing Assembly (2500/3500 Series)
    GM887991Courtesy of GENERAL MOTORS CORP.
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  6. Install the WSS mounting bolt.

    Tighten:  Tighten the WSS mounting bolt to 18 N.m (13 lb ft).

  7. Fig 2: View Of Wheel Speed Sensor Mounting Bolt
    GM924317Courtesy of GENERAL MOTORS CORP.
  8. Install the WSS cable mounting clip to the knuckle.
  9. Fig 3: View Of Wheel Speed Sensor Cable And Connectors
    GM913362Courtesy of GENERAL MOTORS CORP.
  10. Install the WSS cable mounting clip to the upper control arm.
  11. Install the WSS cable mounting clip to the frame attachment point.
  12. Connect the WSS cable electrical connector.
  13. Install the brake rotor (2) shown on the 1500 series. Refer to Brake Rotor Replacement - Front in Disc Brakes.
  14. Fig 4: Front Brake & Hub Assembly
    GM885802Courtesy of GENERAL MOTORS CORP.
  15. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  16. Perform the Diagnostic System Check - ABS (W/O JL4) .