Question about 1997 GMC Jimmy

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1997 GMC Jimmy - Heater Problem

All of the sudden the heater stopped working. Tried to change the settings on it to see if it was just on high not working but none of them work at all. No heater at all..

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  • DSM1954 Nov 28, 2008

    I had the transmission rebuilt and now the heater is not working. It worked fine before transmission problem. The fan works but it will not heat.

  • Anonymous Dec 19, 2008

    my heat will only blow on defrost /vent, will not switch to floor, any ideas/

  • Anonymous Dec 24, 2008

    No Heat

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The heater stops working then as you are driving the heater might start working. it comes on when it wants to it was working all summer it seems to stop working in the winter.when it strts getting cold outside that is when it starts acting up.

Posted on Nov 30, 2008

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I went and got the Book on the vehicle and read about my issue. Then took my volt meter and checked out my heater core and then determended that it was my on/off switch. Then I went and bought a new switch and changed it. My problem is now fixed..

Posted on Nov 18, 2008

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