How do I unclog/check the ac evaporator drain tub in a 2004 GT?
safest and easiest way to unclog that drain is to go to the drain tube located at the lower portion of the firewall on the passenger side and, using a compressed air, or something rigid but flexible and either spray the air into that drain tube or probe it with the flexible item and the water should start to flow. Using a flexible item is to avoid damaging the evaporator. Hope helped.
