Question about 1999 Oldsmobile Alero

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Heater on a 2002 alero died

Hi...my mom has a 2002 alero...one day out of the blue...her heater stopped working and all she gets is cold air...the fan works fine...

Do you have any ideas on what could have caused this problem....the first idea that popped into my head was "thermostat"....but my mom being the pesimist...thinks it's the most expensive fix in the world...that being the heater core...

Any help would be appreciated

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Check coolant.if check out okay .start engine let it get operating temp. then feel top hose if hot thermostat working .problem is in the dash the heater door not getting vacuum to open .could be stuck. or heater control unit could be bad

Posted on Mar 17, 2009

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  • Master
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Have you checked the water? If it is low, it will cause the same problem. Your other choice is to try and flush the heater core out.

Posted on Mar 06, 2009

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