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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISBRAKESANTI-LOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMREPAIR INSTRUCTIONSREAR WHEEL SPEED SENSOR REPLACEMENT (10.5 AXLE)INSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
    Fig 1: Rear Wheel Speed Sensor
    GM1372892Courtesy of GENERAL MOTORS CORP.
  1. Install the spacer block and the wheel speed sensor.
    2. NOTE: Refer to Fastener Notice .
  2. Install the wheel speed sensor retaining bolt.

    Tighten:  Tighten the bolt to 14 N.m (124 lb in).

  3. Connect the electrical connector.
  4. For the left rear sensor, install the leaf spring anchor plate. Refer to Leaf Spring Replacement .
  5. Lower the vehicle.
  6. Perform a low speed test to ensure the wheel speed sensor is functioning properly:
    1. Start the engine and allow it to idle.
    2. Check to see if the ABS indicator or the traction assist indicator remains illuminated.
    3. If the ABS indicator or the traction assist indicator remains illuminated, DO NOT proceed to drive the vehicle until it is diagnosed and repaired. Check the wheel speed sensor electrical connector to ensure it is not damaged and is installed properly. If the lamp remains illuminated, refer to Symptoms - Antilock Brake System .
    4. Select a smooth, dry, clean, and level road or large lot that is as free of traffic and obstacles as possible.
    5. Drive the vehicle and maintain a speed of at least 16 km/h (10 mph) for at least 5 seconds.
    6. Stop the vehicle and check to see if the ABS indicator or the traction assist indicator is illuminated.
    7. If an indicator is illuminated, refer to Diagnostic Starting Point - Antilock Brake System .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.