This is a TSB from GM it seems kinda odd but it may help
The drain tube for the condensation is probably plugged with debris. Condensation is a normal process within the ac system. Locate the drain tube and clean it out, the location varies with each make and model vehicle.
The condensation drain tube is plugged with crud.
Leaks water? The condensation drain is plugged.
The drain for the A/C condensation is plugged. Look under the car on the passenger side for a drain hole. Straighten out a coat hanger and run it up into the car. Don't get wet. A lot of water will drain out.
The evaporator drain is suppose to drain off the condensation (water). If you plug the drain the water will end up inside the cabin on the floor.
Condenser drain tube. It allows the condensation from inside the system to drain out.
That is the drain for the normal condensation from the air conditioner.That is the drain for the normal condensation from the air conditioner.
Condensation from the ac evaporator inside under the dash drains thru a drain tube. The drain tube is probably plugged with crud.
The condensation drain is centered above the transmission, behind the heat shields.The condensation drain is centered above the transmission, behind the heat shields.
It will if the condensation drain is plugged.
Your 1989 Chevy truck air-conditioner condensation drain can be found on the bottom of the air conditioner compressor. The air conditioner condensation drain routes condensation to the bottom of the engine compartment.
It may be because the drain for the condensation line is blocked. Look under the car where the condensation water should be falling and see if it is draining properly. If not a simple clean out of that drain should fix the problem.