a.c. fan blower motor, need help! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-28-2003, 10:26 PM   #1
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Default a.c. fan blower motor, need help!

94sse, blower motor keeps running on high while car is running or off. can not locate relay. i have disconected all on right side under dash & under hood . main fuse blower under hood does stop blower. any ideas? Please.
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Old 07-29-2003, 12:37 AM   #2
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Well I seen the same problem last week while visiting a friend at work ( he is a mechanic). Fan at full speed no matter what you do, car on or off.

It was on a buick ( century I think, approx a 2000) it ended up being a control box under the dash on the passenger side of the dash. This "box" is what controls the speed of the fan and this particular one had the contacts for the high speed stuck on.

Hope this helps.
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Old 07-29-2003, 12:40 AM   #3
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I agree with Mike above, since the control head is controlled by a "module" not just a relay, this could be your problem
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Old 07-29-2003, 09:02 PM   #4
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Have you got automatic climate control?
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Old 07-29-2003, 11:51 PM   #5
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Default blower motor keeps running

Thanks for all the input . fixed it today. replaced blower motor control module on top of blower heater box located under fuse & relay strip on fire wall engine compartment. Does have climate control. rememebered GM '* use to use reostat. maybe still do on some models. cost for part $100.00 at dealer . Auto parts cann't get , Delco will not supply anymore.Weird!!! Thanks again
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Old 07-29-2003, 11:54 PM   #6
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Someone else just changed out one of those a few weeks ago.
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