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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1397 (CELLULAR COMMUNICATION SYSTEM)REPAIR INSTRUCTIONSONSTAR MICROPHONE 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. Remove the overhead console. Refer to Console Replacement - Overhead (TrailBlazer, Envoy, Bravada) or Console Replacement - Overhead (Envoy XUV) in Interior Trim.
    2. Fig 1: Disconnecting OnStar® Microphone Electrical Connector
    GM741633Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the microphone electrical connector to the OnStar® microphone (1).
    3. Fig 2: Identifying Quick Release Tab
    GM754990Courtesy of GENERAL MOTORS CORP.
  3. If only the microphone removal is required, disengage the quick release tab (1) and remove the OnStar® microphone from the overhead console.
  4. If removing the mounting bracket is required, remove the 2 retaining screws to the OnStar® microphone and remove the bracket from the overhead console.
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.