The analyst I am talking about is a financial analyst. They decided it's cheaper for GM to make band aid (at best) fixes and to deal with people like me individually than to really fix the issue.Interesting that they had an analyst weigh in on the topic and haven't come up with a solution going forward or a quick fix for us current owners. Maybe the new 2019's will have an upgraded system/parts that wont squeak... but then again that's if you like the new look and can afford it...
Good luck and keep us posted if they answer your requests!
I would bet that the 2019's, being redesigned, have different springs. Maybe not though.