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Old 11-29-2008, 03:04 PM   #1
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Default Blower wont shut off

I have a 92 bonneville SSE. Last night i got into my cay and i heard the defrost running. Luckily my car started up. While i was driving i tried to shut off the heat with the digital climate control. It showed it as off but kept running. Then when i got home the blower kept running i had to disconnect the battery to stop it. Now as soon as i reconnect the battery the blower starts up again. I pulled the relay but it keeps running. Any ideas on how to fix it?
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Old 11-29-2008, 03:49 PM   #2
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You sure you pulled the right relay? Check your wires for a short. That'* about all I can think of.
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Old 12-01-2008, 12:23 PM   #3
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If you have the automatic digital readout temperature control your model has a blower control module which replaces resistor packs on the manual model. Those can fail in different ways where they sometimes work, sometimes don't, change speeds erratically, and stay on is a failure mode.

Follow the leads from the blower motor up to the relay/maxifuse panel to find the BCM. The blower module is bolted into the channel carrying the air from the blower motor because the power transistors have to be kept cool. Depending on the layout, you might have to loose bolts holding the maxifuse panel in place to lift it slightly.
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Old 12-19-2008, 02:21 PM   #4
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I replaced the Blower Control Module and the fan works now. However when the car is first turned on it will blow warm air but then after a minute switches to cold air. I don't really know where to go from here. Any ideas would be helpful.
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