Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hi Tim, back in the day we used to have really good luck doing the following. Run the AC system on medium speed and without the recirculation button on. Now spray unscented Lysol down into the cowl where the AC system pulls outside air from. It may take a couple of applications but it usually works. In extreme cases the HVAC box has to be removed and cleaned. You also need to make sure the evaporator drain is completely clear, I would hope the dealer would have checked that because a blocked drain is normally what starts it all. Don't use scented Lysol because it will end up being overpowering in the cab-don't ask me how I know.
Wow, that's a terrible story. It is unfortunate that the quality of help in the industry has gone down so far. Glad you got it fixed as well as you did.