Hey thanks for the info.
I reviewed all the TSBs and didn't see anything on your specific vehicle stating this problem. However.I believe you both may be correct.
I just worked two vehicles last week with similar problems. Different models makes.
One. They actually had a TSB out that debris would collect and back up and cause the rain water to run through the HVAC system and actually blow on the windshield on defrost and leak on the floor boards. Some would be the passengers side some the drivers side. You know how water is. It goes everywhere.
Another was the vents/drains coming through the firewall. Driving no water, sitting the rain would go down the firewall and run through due to the caulking and seal were not holding.
Another several weeks prior to that the info on the vehicle said to remove the outside vent are next to the windshield and see if there is separation down by the HVAC vent area.
My suggestion.I would first look at the firewall my self and inspect for any areas coming through the firewall and check the seals caulking plugs etc. Then the vents up by the windshield area where they enter the car.
Get inside. Have someone run a water hose down different spots on the firewall slowly. And just watch and listen, next move up to the middle of the windshield on the drives side, then the passengers. Look around in that area for debris. You may be able to drop the blower fan and stick your hand up there and see if it is clogged.
I would do all of this first. Then either let us know what you find or then go back to the dealer for the fix.
To me. That is a little pricy.I show labor about $500 to replace a evaporator core and that includes removing the dash. I would have them break the charge down for you and let us know what the itemized cost is. Maybe I am missing something.
I hope this helps.
Thursday, January 8th, 2009 AT 8:11 AM