My appologies for the confusion, its the passanger side that blows warm always, the drivers side is perfectly fine. I assume there is only one of these actuators in the grand prix's? Would you happen to have a link to the one you found on ebay, just so I can make sure that I am getting the right part (if you dont mind sharing that is?

Thanks for the quick response!

Quote Originally Posted by toolguy View Post
I have the same issue on my passanger side and am fixing it now. The issue is the actuator, basically a motor with gears, that moves the temperature blend door to create hot, warm, or cool air is not working and must be replaced.

The part is not cheap if you buy new, I found $112 on ebay. It is easy to get to, just remove the glove box, for the passenger side. If it is your driver's side, it is a little more buried but still can be accessed.

You stated passenger side blows warm, then driver's side blows warm in your post, so I am not certain which side has the issue.