shows charging system failure

Asked by Mar 31, 2016 at 12:04 AM about the 2005 Pontiac Grand Prix GTP

Question type: Maintenance & Repair

2 Answers

1,610

Could be bad/broken belt or alternator, start there, take alternator out and test first

83,495

I believe that the BCM controls the charging system on this vehicle. So I am assuming that you did not have the preset saver tool plugged into the power port or if a newer model the OBD2 port, if that is the case then you have lost some if not all of the factory and owner presets, the only way to cure this is to have the dealer reflash the system to match the VIN. If the vehicle runs and drives then you are indeed fortunate, when this happens to a lot of people they can't even start the engine as it shuts down everything in the accessories department. HTH

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