1995 Pontiac Grand Prix Heater Blows Cold Air Put Coolant Works While Leaks Out

1995 PONTIAC GRAND PRIX
105,000 MILES
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my heater blows cold air. I put in coolant and it works for a while then it blows cold air. I dont see any leaks but the coolant is out again. Can u help me out, please?
Feb 16, 2013 at 5:38 PM
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