vibrating

I have a 2014 Lacrosse Premium 2 with the Bose Centerpoint Surround system and am trying to get under the interior side of the rear decklid trim to add more insulation against buzzing/vibration noises that have made themselves more apparent. I’m having trouble removing the C pillars, more...

Hi all, Not sure if anyone else is having this problem or not but its unbelievably annoying and I would like some advice. So around 1900-2100 RPMs in 1st-4th gear there is this really pronounced rattling sound somewhere in the vicinity of the driver side A pillar or maybe even somewhere inside...