Charging system failed

pontiac

#1

I have a 2004 Pontiac Grand Prix. When I’m driving and I go to slow down for a stop sign or what ever my car sounds like it wants to die. I have the heater going and the goes low. On the screen that’s in the car it says charging system failed. Any ideas on what this can be?


#2

Have the battery and charging system tested and checked for corrosion at the cables. Most parts stores will do this for free.


#3

Clean the battery connections and make sure the alternator belt is tight. Check the connections to the alternator also as TSM suggested. If those items are ok have a load test done on the charging system to check the battery and the alternator.