My 2006 Grand Prix showed message "Charging System Failure" 2 times in one day for a short period of time. I have driven it for 3 days with no error messages.
After the 2 error messages, I cleaned the battery terminals. the battery voltage is 12.5 volts and with the engine running the alternator charging voltage is 14.5 volts.
What is recommended.to do?
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