So my brothers heat has not worked in his 99 GTP since we did the LIM. So, just as everyone recommends I did some research and I came to this page...
http://www.grandprixforums.net/showt...c+blower+motor

Which in short goes on to say that the pictured vac line controls the HVAC. So I go out and check the line for visible cracks. Nothing. Then I go about spraying carb cleaner on the lines to see if the idle will fluctuate from a crack. Nothing. So I decide to see if I can find where the line goes to, well I lose track of it after it goes into the big wire loom under the fuse box. So next step, find a diagram. Of course, I find nothing.

So the questions are....
Where does the line go to other than the tree on top of the S/C?
Is this the proper line that controls the function of the HVAC (right now the fans don't turn on and you can not hear the doors moving as you change where the heat comes from)?
Anything else I should try?

This is by brothers dd and winter seems to be fast approaching so I need to get this fixed quick! All help appreciated.