Question about 2003 Pontiac Montana

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Overheating pontiac montana shooting out cold air from heater

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Check your radiator water level,,,check for leaks on radiator,,,check for leaks on heater core,if it is leaking it might show up on passenger side floor being wet and smell like antifreeze,

Posted on Mar 16, 2011

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Get the radiator and heater core, hoses and thermostat replaced. Also replace the mixing valve if needed. A radiator shop could give you an estimate and diagnose the problem better than I can online. I hope sincerly that this helps.

Posted on Mar 16, 2011

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