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Brake Warning Indicator Always On

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Hydraulic Brake Diagnostic System Check? Go to next step. If not, go to HYDRAULIC BRAKE SYSTEM DIAGNOSTIC CHECK  under TROUBLE SHOOTING.
  2. Turn ON the ignition, with the engine OFF. Release the park brake. With a scan tool, observe the PARK BRAKE SWITCH parameter in the Body Control Module (BCM) data list. Does the scan tool indicate that the PARK BRAKE SWITCH parameter is Off? If so, condition is intermittent. Check for loose or poor connections. If not, go to next step.
  3. Turn OFF the ignition. Disconnect the park brake switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the PARK BRAKE SWITCH parameter. Does the scan tool indicate that the PARK BRAKE SWITCH parameter is Off? If so, go to step  5 . If not, go to next step.
  4. Test the signal circuit of the park brake switch for a short to ground. Did you find and correct the condition? If so, go to step  9 . If not, go to step  6 .
  5. Inspect for poor connections at the harness connector of the park brake switch. Did you find and correct the condition? If so, go to step  9 . If not, go to step  7 .
  6. Inspect for poor connections at the harness connector of the BCM. Did you find and correct the condition? If so, go to step  9 . If not, go to step  8 .
  7. Replace the park brake switch. See BRAKE PEDAL ASSEMBLY  under REMOVAL & INSTALLATION. See  9 .
  8. Replace the body control module. See appropriate INSTRUMENT PANEL article. After repairs are complete, go to next step.
  9. Operate the system in order to verify the repair. Did you correct the condition? If so, system is okay. If system is not okay, go to  2 .
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