Blower Motor Question

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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matt97ssei
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Joined: Tue Nov 13, 2012 2:07 pm
Year and Trim: 1997 Pontiac Bonneville SSEi

Blower Motor Question

Post by matt97ssei »

So my car is turning into a real nightmare lately, problem after problem it seems. My blower motor suddenly died one day leaving work, I had started the car the fan came on high for just one second and immediately shut off. I turned off the electronic climate control and turned it back on and it seemed to only get to the low speed and it immediately quit and then it stopped working completely.

Now i've been looking around on the site, reading about the blower control module, and apparently people here are saying that if it goes bad, you will have high speed fan only. Is this true, because I no longer have any speed what so ever. I also have an unsolved A/C clutch issue where the clutch will not engage. I am really hoping that my HVAC programmer is not dead because I can't find one anywhere and the junkyards anywhere near me don't have any 97-99 Bonnevilles that I can grab one from... they are all crushed............... :banghead:

Basically what I'm asking in short is, will the blower motor run at the high speed setting if my control module under the maxi-fuses is cooked?
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J Wikoff
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Year and Trim: 1992 SSE
2009 G8 GT
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Re: Blower Motor Question

Post by J Wikoff »

High only does seem to be the common failure mode. I'd check to see if the bcm is getting proper signal from the hvac controller.
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matt97ssei
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Posts: 39
Joined: Tue Nov 13, 2012 2:07 pm
Year and Trim: 1997 Pontiac Bonneville SSEi

Re: Blower Motor Question

Post by matt97ssei »

The thought of that scares me. I been trying to find the write up on how to diagnose the HVAC controller but I can't seem to find it again. I came across it on another post a while back when I was having electrical issues, I am stumped now
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zigger21
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Year and Trim: 1997 Bonneville SSE
2005 Bonneville GPX

Re: Blower Motor Question

Post by zigger21 »

matt97ssei wrote:The thought of that scares me. I been trying to find the write up on how to diagnose the HVAC controller but I can't seem to find it again. I came across it on another post a while back when I was having electrical issues, I am stumped now
Just replace the fan if it doesn't blow, its very easy to change. The Blower is on the fire wall and first I would take the cross bar and it easier to give more room to work there is a 8MM screws holding it in. New ones are 30 bucks and its just unplug a couple wires and unmount it but the new one in just like taking the old one out. I hope this helps
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