Ok, so when I turn off my car, my blower won't shut off. It is driving me absolutely crazy, because I now have to disconnect my cables every time i turn off my car. It's a '91 Deville. Can anybody offer any help?

Edit: Ok, so I managed to look around on the forums and found people having the same problem. Where would you suggest the best place to get parts from?

Your problem is the blower module. Common problem on this vintage Caddy's and Buicks. Located on top of the A/C plenum, in the engine bay, about center of the firewall (slightly closer to the passenger side). Three 7mm hex screws hold it in place, and two electrical connectors.
These rascals are over $100 from GM, but cheap at salvage yards. I harvest all I can when I visit my favorite yard.

First check the computer to see if afterblow is enabled.sts96

http://www.rockauto.com - good prices, very fast shipping
http://www.gmpartsdirect.com - good prices