Heater fan blower won't shut off on 1990 Cadillac Sedan DeVille


Old 08-27-00, 01:39 PM
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When I pulled into my garage and shut off my car the blower kept running. I have disconnected the plug to the blower and that is the only way I can get it to shut off. Need to find out where the relay that controls the fan is?
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Old 06-01-06, 02:14 PM
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heater fan

i need to know about heater fan on same car please let me k
now thank you [email protected]

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Last edited by mattison; 06-02-06 at 04:05 AM.
Old 06-01-06, 04:17 PM
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Is it the heater/AC fan or is it actually the engine cooling fan?
Old 06-02-06, 03:29 AM
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there is an electronic blower speed control module that bolts into the a/c heater ducting usually 2 or 3 bolts usually near the blower motor that can cause the blower motor to run all the time, if the blower motor is pulling to much amperage it can damage or shorten the life of the new module. recomend seeing a shop to be tested. the module will look like the picture in the link below.
Old 06-02-06, 03:46 PM
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5hanks for help itis the heater fan thanks billy and bejay thought there may be a relay switch someplace

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