PontiacBonnevilleClub.com

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...............

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?

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.

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

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