2012 gs

The moisture inside the headlight assembly is caused by the HID Xenon light getting hot and as it cools, the enclosure pulls in air from the outside of the light. The headlight assembly now has air in it that contains moisture. There is no way for that moisture to escape and starts to accumulate...

Relatively new here, first time post, used the search function but couldn't find any post related to this issue... I own a 2012 Regal GS... I was on a road trip in Tennessee and when pulling out of a rest area I accelerated to merge onto the freeway and my engine started running very rough...