Question about 1997 GMC Safari

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97 GMC Safari heater takes forever to get warm.

Is it possible that I have a thermostat problem?

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It sounds like your thermostat is bad - it has become worn to the point that it will not close anymore, making the coolant circulate all the time- this is why it takes a long time to heat up, because it never builds heat before the thermostat opens.

Posted on Jan 03, 2009

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Are both heater hoses hot i need to know this to go on??





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97 GMC Safari Van - Heater takes forever to blow hot air. Could this be a thermostat problem?


Hello,

Humm I make the assumption that you don't have overheating problems. Yes, sounds like a thermostat is stuck open. If you have a gage on the dash you may also notice that the engine temp takes a long time also. Sometimes when you sit a light for a while the temp edges up and starts to get warm....then when moving down the road a higher speeds the temp cools off again. this does this because the thermostat may be stuck open and it cools the heated water in the engine when moving. Also, check the coolant level in the radiator. (only do this when cold!!!!!!!!) ok????? NOT HOT! low coolant can affect how the heater performs. (low volume)

Hope this helped. :)
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