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most likely a defective blower module under the hood

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15y ago
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Q: Why would a blower motor stay running on 97 deville even with key off?
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Why would the blower motor not work on a 1995 Cadillac Deville?

The blower motors only work with the engine running. If the blower motor has three wires on the electrical plug, then the blower motor module is built into the unit & it's very expensive. Sometimes, you can tap on the motor with a hammer & it may work or slowly turn. If this is the case, replace the blower motor.


What would cause a blower motor not to blow when it has been replaced in a 2000 Cadillac deville?

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Where would you find a blower motor resistor for a 1995 cadallic sedan deville?

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What causes a blower fan on a 1991 Cadillac DeVille to keep on running even after the ignition is turned off AND the relays are disconnected both under the dash and under the hood?

I have the same problem with a 1991 DeVille that I acquired three days ago. The blower worked fine at first, then would not shut off but would vary speed from the dash control. Now it only runs at high speed in the off position. After shutting off the car, the dampers repositions to the heating position from the cooling position. the blower motor has a high amp draw shorting the control module, replace them both!!!!