Question about 1999 GMC Savana

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Heat only blows cool air

I have a 1999 gmc 15 passenger and my heat will not get hot

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Its your heater control module under dash.

Posted on Mar 21, 2009

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Check the coolant level and see if its low and your thermostat...if your coolant is low it wont allow heat to get through

Posted on Jan 01, 2009

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