Question about 1989 Cadillac Sedan DeVille

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Heat not working on 89 sedan deville

The fuel cluster also jumps around and heater blows cold

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  • rwilloughby2 Jan 13, 2009

    im thinking it might be my BCM.i know it controls heat and air and also my problem with the fuel data center jumping around.

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The heater mabey cause from many things easy to check are your thermostat. heater core or low antifreeze

Posted on Jan 12, 2009

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To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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This will help.Thanks.

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Find free online repair manual for 1989 cadillac deville


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