from what ive heard its not to bad, its under the pass side dash. a lot of people have changed them, used blowers seem to be the way to go as they are not cheap new.
if you have water leaks when it rains that could have caused the fan to croak on you.
theres a how to, to fix the leak if you have a wet pass side floor. http://www.grandprixforums.net/water...-fix-6961.html