might be worth taking to a body shop, thats really up to you and your ability. the sun roof is a pretty common source as we both mentioned, but i dont think you are going to get snow through that and it would be up above the headliner till it melted. thats why i was thinking door seals or the door plastic sheet, would have to be a pretty direct path to were the snow was. i remember watching a trick to see if the seals are bad which involved putting a dollar bill in the door and moving it in and out and if its tight the seal is good, anywhere that its too loose has to be tightened or possibly put something behind it.

as far as v-tak, there are levels, the more posts, the better the saying.

I have had inside frost at times but I knew I had a water leak. Mine has gotten worst to the point that if I get an all day rain I will have a puddle. Time to get it fixed

here it is late may and i have a new-ish but likely related situation. a few weeks ago with obviously no snow involved there was some condensation on my inside glass, mostly the rear. Same old thing, i thought, but no snow so even more puzzling. i just shrugged it off.

then, about 3 weeks ago i could smell mold or mildew inside. i pulled out the loose carpet pads and the built-in floor-only carpeting was pretty wet in all 4 foot-wells. i thought it must be from accidentally leaving windows open in the rain. i got religious about closing all windows, ran high heat at idle for hours, closed doors, opened doors, etc and after a few days the rear foot-well carpets were dry, the driver'* still damp, but the front passenger'* still very wet. no more smell or i'd have panicked by now.

i started putting kitty litter in that passenger foot-well to soak up the wet. by god, every morning the litter had turned to clay mud and needed sweeping up and new litter put down. the wetness is worst near the seat and next to the center bump, but that could easily just be my driveway. this went on for maybe 10 days til i got sick of it a couple of days ago. no, the windshield isn't leaking down, tested that. someone suggested a rust hole under the car. hmm, maybe, but wouldn't it drain just as fast as it came in?

so just now i went to an auto-body place and the guys best guess is a clogged heater box/core drain. he said it might get un-clogged with a little tweak. me, i know nothing!

There are two main reasons for water in the floor of a 2000-2005 Bonneville. #1 reason is a door seal was opened and not closed properly- typically occurs if a window actuator was replaced or other work done requiring the door panel to be removed. The other is a clogged sunroof. If you don't have a sunroof I suspect you have a unsealed door panel. I will do some searching for detailed threads on this issue. The clogged heater core causing massive interior water is not a common 2000-2005 Bonneville issue.

If your carpets are wet there is no way you can dry them unless they are removed and left in the sun for a few days. There is foam on the back side of the carpets that will be saturated in water and they will never dry by the methods you are using.

Naturally, it would be a waste of time to dry your carpets without fixing the water leak(*) first.

Does your car have a sunroof? If it does, I can tell you a very simple way to determine if the sunroof drain tubes are the problem.

If your car does not have a sunroof, or the sunroof drains are not leaking, the next most likely culprit is the sheet plastic watershields attached to the door sheet metal behind the door trim panels. In order to determine if they are the issue you would have to remove the trim panels to examine the water shields.

Start by telling us if you have a sunroof or not.

could be either, if you have a rust hole it will make the carpet wet and stay that way

Could be, but he mentions all four foot wells as being wet, which leads me away from a hole in the floor pan. Also, a 2003 should not have that level of rust yet. There are all sorts of possibilities ... he needs to start narrowing them down by checking the easy ones. Like sunroof drain tubes.

Sunroof, yes I have one, rarely opened. If all were fine with it, where would the drain tubes drain to? If they are bad, wouldn't I see wet somewhere between the roof and the floor? The car has only 79k and no visible rust anywhere. Door seals? No window work done ever, windows work great. Someone back here in the snow question days said to check the door gaskets(?) with a dollar bill, which should hold the bill. I only tried the driver door, didn't hold a bill anywhere. Not sure what other issues to respond to, but Roy thanks, gotta maybe eventually have someone pull out the carpet to dry it out, after the wet source is fixed.

Take a look at this thread:
https://www.gmforum.com/2000-2005-90...or-fix-302354/

Make sure you read Roy'* comment on the door water flow design. There is also a picture which may be helpful.

I have a 2001 SSEi with 201k miles and rusted out brake lines, etc. The uni-body floor pans should no sign of corrosion from the salt, etc. The did show signs of corrosion where water was sitting for six months while I was out of the USA.