We just bought our 2003 bonneville se less than a week ago. It had 24000 miles on it. We are going to take it to the dealer, but I was wondering if anyone else had this problem. When the air or ac is on water (a lot of it...soaked the floorboard) comes out on the passenger side and it makes a loud noise ONLY when we turn to the left. It didn't do it for the first couple of days. Just curious if this was a common problem. Thanks a bunch! Other than this problem...We love the car.

Are those two different problems? The A/C sounds like your drain for the water condensate from your evaporator is plugged. Does it make the loud noise when you are stopped and turn the steering wheel to the left?

Sounds like the evap canister drain hole is plugged.

Thank you for your responses. I'm not sure if they are different problems or related. I just talked to the dealer and scheduled an appointment to have it looked at and fixed. Earlier today I tried it with the a/c button off and just the blower on and it still did the noise so it may have something to do with the blower. I'll let everyone know after we take it back to be fixed. This is my first time to post on here and I appreciate the information. Thanks again.

Just thought I'd let everyone know what'* been happening. We finally got it back in after getting a bit of a run around. Before we could get the car in the blower went completely out. It'* in the shop now and they say it will be ready tomorrow, but I'll believe it when I get the call. They haven't yet said what exactly the problem was, but I'm going to find out.