I have a 2004 Monte Carlo LS and every time it rains my passenger floorboard gets wet. The water seems to be coming from under the dash and around the a/c blower. Does anyone have some advice on how to fix this problem? Thanks!

 

Did you figure out the issue? Mine is doing the same thing.

 

Easy search, there is a fix in the 6th gen How To section to solve this common issue. Below is the link:
https://montecarloforum.com/forum/si...lem-fix-26663/

The fix is quick, easy and cheap (best kind)

 

Just search permanent cabin air filter fix on this forum and you will find it. I just fixed mine two days ago and it rained yesterday and it works perfect.

 

Beat ya to it, link already included in my last post.