Ok, so I have a 2006 GT supercharged and thus far, the car has been very reliable. I have always traveled short distances (to/from work) but recently drove from Denver to Chicago and since I got back it's doing weird things

1. There is a "rattling" sound when I make turns or drive slow. It is not felt in the steering wheel or anywhere but is very obnoxious.

2. My hood display on the IC is popping up periodically but the hood is closed and was not opened recently (other than oil change prior to us leaving) I have opened it and shut it several times to resolve - but is not.

3. The WHOLE car flashes and dings at me randomly throughout driving. There is really no reason or anything - just does it and goes away.

I took it to the dealer and they can not (of course) duplicate this problem or find anything to "fix" to correct the rattling - but it is MAKING ME CRAZY!!! HELP!!! PLEASE!!!