Thread: Lake Michigan LOL

I have an 04 GTP and every time it either rains hard or i go through a drive through car wash my back passenger floorboard gets soaking wet... I mean like one-two inches of water... I pulled my carpet up to see if i had a whole in my floorboard but i do not... I do have a sunroof in my car but i don't know where my drain tubes are to check them.. If any one has had this problem or know what it may be plz write back.. Any HELP is Appreciated. thanks Amber

check this thread out , should give you all the information you need.

http://www.grandprixforums.net/water_floorboard.php

very common problem.