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.
To prevent clogs in your heat pump condensation drain, regularly clean the drain line with a mixture of vinegar and water, install a drain line trap to catch debris, and schedule annual maintenance checks with a professional HVAC technician.
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.
To prevent clogs in your HVAC condensation drain system, you can regularly clean and maintain the drain line by flushing it with a mixture of water and vinegar, installing a drain line cleaning device, and ensuring proper insulation and ventilation around the system to prevent mold growth.
Condenser drain tube. It allows the condensation from inside the system to drain out.
Common causes of water leakage from an AC condensation pan include clogs in the drain line, a damaged condensation pan, or improper installation. To prevent water leakage, regularly clean the drain line, inspect the condensation pan for damage, and ensure proper installation of the AC unit.
Condensation from the ac evaporator inside under the dash drains thru a drain tube. The drain tube is probably plugged with crud.
That is the drain for the normal condensation from the air conditioner.That is the drain for the normal condensation from the air conditioner.
The condensation drain is centered above the transmission, behind the heat shields.The condensation drain is centered above the transmission, behind the heat shields.