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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESAUDIO SYSTEM TROUBLESHOOTING HINTSIDENTIFYING CONCERNS
2008 Pontiac Grand Prix Base

Identifying Concerns

2008 Pontiac Grand Prix BaseSECTION Identifying Concerns
  1. In order to isolate the source of the noise/poor reception, identify the ignition switch position that the concern is most noticeable:
    1. Turn the ignition switch to the accessory position.
    2. Turn ON the radio.
    3. Seek up 88-108 FM then 550-1600 AM.
    4. Record the number of valid radio stations where the tuner stops.
    5. Repeat these steps with the ignition ON, and the engine OFF then again with the engine running.
  2. Return the ignition switch to the position that the concern was most noticeable.
  3. Remove fuses or circuit breakers one at a time until the noise has been eliminated.
  4. Identify what systems or components are powered by the fuse.
  5. Reinstall all fuses and circuit breakers.
  6. Disconnect the components powered by the fuse one at a time until the concern has been eliminated.
RENDER: 1.0x

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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.