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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1630 (LIGHTING SYSTEMS)DESCRIPTION AND OPERATIONEXTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATIONDRIVER CONTROLS AND MODULES
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Driver Controls and Modules

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Driver Controls and Modules
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The Body Control Module (BCM) module processes the inputs and the controls. The ambient light sensor supplies the BCM with a signal for daytime conditions or for low light conditions:

  • The Body Control Module (BCM)
  • The ambient light sensor
  • The Instrument Panel Cluster (IPC)

Driver controls include the following components:

  • The fog lamp switch
  • The door lock switches
  • The autolamp dimmer switch
  • The autolamp switch
  • The park/neutral position switch
  • The park brake indicator switch
  • The stop lamp switch
  • The turn signal switch
RENDER: 1.0x

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

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  • • 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.