Possibly a stupid question but I'll ask it anyway. Off and on I've had the leaky onstar antenna on my 2004 Grand Prix GTP. I "fixed" it a while back following the instructions posted online but it still leaks once in a while. Anyway, fairly regularly when I'm making a turn, accelerating, or braking I hear what sounds like water rushing or swirling around. Is it possible there's a bunch of water that leaked in through the antenna and is trapped in the roof? Or somewhere else? Or is this AC condensation somewhere? Or ???
Thanks.