When my A/C is on I am getting no condensation drip. I can run it for an hour with the A/C park it for 5 minutes and still nothing. Not sure if this is something I should be concerned about...whats up.

 

Clogged condensate drain.

 

I tried to shoot compressed air up the little drain hose beside the tranny but nothing happened. Where should I look to find the clog at?

 

My 03 has a similar issue, not only will it not drip, but the condensation is coming back into the truck on the passenger floorboard. I can see exactly where, underneath a box behind the glove box near the floor. My carpet gets soaked when I run the A/C. Lift up your floor mat to check yours also. Where is the condensation drain located?

 

drain is on the firewall behind the passenger cylinder head, with a plastic kidney shaped cover over it

due to its proximity and tight clearance with the cylinder head I would highly recommend attempting a service on a completely cold engine