I have a '07 uplander, and i need to clear the a/c drainage hose. i have dont some research and everthing is telling me the hose i need to find is on the firewall on the passenger side. i've spent 2 hours looking for this thing and cant find it anwhere. can anyone help me? a pic would be awesome? please help.

 

come on guys.. over 60 views and noone can help. maybe im expecting to much from chevy owners.