2008 Pontiac Grand Prix Just Recently Started Blowing Warm Air Heater Before

2008 PONTIAC GRAND PRIX
78,000 MILES
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my 2008 pontiac grand prix just recently started blowing warm air from my heater as before it was coming out hot. Could you tell me what possibly could be wrong with it and what can i do to fix this. Thanks Andy
Nov 14, 2012 at 10:34 AM
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JACOBANDNICKOLAS
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MAke sure the engine is warming up to operation temp (could be a bad t-stat) Also, make sure the coolant is full in the system.
Nov 14, 2012 at 10:40 AM
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