I need some help please. I have a 2015 Chrysler 200s with the 3.6 Penistar engine. It has about 39,000 miles on it. It is an AWD as well. Recently it has been squealing when I start it for about 5-10 seconds then stops. It is winter time and temperatures are getting down to single digits, so it's been pretty cold. It has never squealed until the temperatures started dropping. I've also noticed that when I have the heat on, I can hear a slight and very quiet squeal sometimes. I have read up on the 3.6 a Little and have heard good things about it. I've read that instead of a belt it has a chain. Could it be the chain that is causing the squeal or something else? Any suggestions or help would be awesome.