Circuit/System Testing

2008 Pontiac Grand Prix BaseSECTION Circuit/System Testing
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool clear the Radio Theft Information.
    • If the DTC resets, replace the radio.
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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.