I have a 1999 Buick Regal LSE with the automatic climate control system. Over the past year my blower started ticking a bit eventually turning into a full tilt annoying chirp. I decided to replace the blower motor. When I took the old blower out I realized there is an opening in the motor where I could have sprayed some grease in. That may have solved it. Anyhow, after 8 years I figured a replacement wasn't a bad idea. So I put the new one in. I put up a website about it. Hope this helps someone.

I documented my replacement job with pictures here:
http://www.redhouseon7th.com/howto/1999BuickBlowerReplacment/index.html

-Mike