Auto Air Conditioning & Heater Repair: A/C Drain, gmc sonoma, drain port

Question
I own 2000 GMC Sonoma, I cant seem to find the drain port for the A/C. Do they no longer use a drain hose? The condensation seems to be draining down the wheel well firewall but I not seeing a large amount of condensation fluid. My co-worker with the same truck seems to think it may be block.  

Answer
It IS possible that it is restricted due to foreign debris. There is either a small rubber or plastic drain tube or possibly just a hole located directly under the evap of which you will have to climb under the vehicle to see it.

Usually when this drain plugs up, the condensation saturates the carpeting where you put your feet in side the vehicle.