2009 Chevy Traverse LTZ-I have a chiming sound (not a beep) coming from my dash seemingly on the passenger side. I can hear it both inside and outside my vehicle and it never stops. I have disconnected the battery overnight and hooked it back up but the chime continues. It's not from having weight on the seat because I've checked. It doesn't even stop after the vehicle is shut off and can chime all night. Any idea what this could be?