I would recommend that you have them check the in cabin air filter. That is what was wrong with mine. I cannot tell you if that fixed the problem, since the dealership does not have my parts yet.

 

thanks John, but I didn't have my A/C on either time this happened. It was cool out both days and it was pouring out.

 

Just wanted to give my thoughts (and Thanks) to everyone contributing to THIS thread. Although I haven't experienced THIS problem... yesterday was the FIRST day I experienced minor flooding in downtown Detroit. Drove through some rather deep and long 'puddles'. Thankfully- THIS thread was the FIRST thing I thought of... and (thankfully) no problems!
Thanks again for helping keep people on their toes!!!

 

I have only had my HHR a month. We haven't had any rain yet, but now i'm starting to worry!

 

Why worry. Worry when you see the water. Until then don't assume you will have the problem. Most people do not have a problem, remember.

 

You have a point!

 

Had the same problem here and they fixed the cabin air filter gasket or whatever its called and havent had the problem since. The dealer told me the rubber gasket had rolled up and was letting water in. Hope this is of some help

 

I took my car to the dealship on thursday and they replace the in cabin air filter, cover and gasket. They also cleaned the carpeting and the padding. however my car still has a funny smell to it. Maybe I have developed some mold on the carpeting or padding? I wonder if the smell will go away or get worse? I think I may be going back to the dealership to have the carpeting and all other affected parts replaced, wish me luck, Thanks.

 

i had a small leak and it was coming from the water runoff channel by the door near the edge of the windshield its double side taped and lock into a channels, the tape wore off and water would get into the channel and down the apiller when it rained hard, i used silcon sealant in the channel and all is good

 

I would think if it smells then you got some mold or something they did not get. I got mine in quickly so the dealers fix worked. I would take it back and get new carpet and padding. My dealer told me the padding is kind of thick so you may have developed some mold or something on that if you did not put it in the shop right after the problem. Hope this helps.