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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1245 (LIGHTING SYSTEMS)REPAIR INSTRUCTIONSDAYTIME RUNNING LAMPS (DRL) AMBIENT LIGHT SENSOR REPLACEMENTINSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the electrical connector to the DRL ambient light sensor (3).
  2. Install the DRL ambient light sensor to the sensor bezel. Rotate the sensor clockwise to secure.
    Fig 1: Installing Daytime Running Lamp Ambient Light Sensor
    G01503210Courtesy of GENERAL MOTORS CORP.
  3. Position the forward edge of the sensor bezel to the I/P upper trim panel.
  4. Press the rear edge of the sensor bezel down until the rear retainers are seated correctly.
    Fig 2: Installing Sensor Bezel Into Upper Trim Plate
    G01503211Courtesy 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.