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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1407 (ANTILOCK BRAKE SYSTEM AND TRACTION CONTROL SYSTEM)REPAIR INSTRUCTIONSWHEEL SPEED SENSOR REPLACEMENTREMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the brake rotor. Refer to Brake Rotor Replacement - Front in Disc Brake.
    Fig 1: Removing/Installing Brake Rotor
    GM748559Courtesy of GENERAL MOTORS CORP.
    4. Fig 2: Identifying Wheel Speed Sensor Wiring Harness
    GM886518Courtesy of GENERAL MOTORS CORP.
  4. Remove wheel speed sensor wiring harness the retainers.
    5. Fig 3: Locating Connector
    GM886517Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the wheel speed sensor electrical connector.
    6. Fig 4: Locating Wheel Speed Sensor Mounting Screw
    GM777335Courtesy of GENERAL MOTORS CORP.
  6. Remove the sensor mounting screw.
    7. Fig 5: Removing/Installing Wheel Speed Sensor
    GM748580Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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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.