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Blower motor nightmare

Linebacker

New member
2005 grand prix gtp comp-g

Hey, So the other day i took my car for a car wash, it was pretty cold about -32F, did not think much about it, after the car wash i had the heat blowing high on the windshield so i did not fog up and drove for about 15 min back to my place. Later that day i went to go out and noticed that my interior fan was not blowing... i figured some water got in the fan and its frozen, so next day i took it to a shop i go to sometimes and asked the guy to pull it in overnight and try it in the morning.

So next morning i get a call from the mechanic and he says that the blower motor is filled with water and will have to be replaced, he quotes $325 for parts and labor, (Right away i know that's pretty high, But this shop does good work and is one of those napa autopro shops so the parts are usually of a good quality. And i have no heated place to work or i would of just done my the job myself). He also mentions that he can seal the leak where the water came in for another $300, I declined that since that's just crazy.

So now my blower motor works but i have noticed that if i turn the fan setting to max it does not blow nearly as hard as the old one use to, I would say max on this fan is about 60% on the other, So any reason for this? Is there a way he used a lower RPM fan or something and i way i could prove it so i could go back there?

And also the mechanic said the water came in from the wiper cowl, It lifts up near where the cabin filter sits, I was thinking some double sided tape but i am not sure that will be strong enough. Any other ways of making it seal to the windshield but still be easily removable if i have to go in there, (cabin filter, Wiper motor)
 


I bought an after market blower motor for my 05 as well. Its not nearly as good and definitely louder. There's only 3 bolts holding it in under the passenger side dash and super easy to replace. I think the aftermarket ones just suck.

There's a part to buy that deflects the water. For some reason I can't link things, but go to the how to section. Its called water in the floor board take 2. It gives the p/n to fix the part
 
thanks for the link, looks like a good fix, that piece will fit an 05 grand prix right? looks like the car hes putting it on is the earlier body model.

Also i have read that if the blower motor is wired in reverse it does not blow properly, think maybe thats the issue or does it use a connector harness?
 
pretty sure that part # works for all W bodys.

the fan wires, im sure if you wired it backwards it would run backwards.
 


The blower motor can only hook up one way. That piece fits the 04+ as well I did it on mine. I also swapped my blower motor a few months ago in about 10 min.
 
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