Wondering if anybody else has experienced the same problem. I have my Carnival since May 21 and since the first day, I've been hearing a squeaky noise coming from the engine compartment. It really sounds similar to a belt slipping, but it's probably not that. I've been to the dealer 4 times now, and they can't find were it comes from. They replaced the belt tensioner twice and last time they changed the alternator. But the sound persists. Starting to think it might come straight from the engine. Maybe valves making that noise? Anybody had this issue? Thanks.