Ben8jam

Car has developed a rattle/squeak and found it to be form the lower left corner of the dash by the diagnostics port. I tried in earnest to find any type of screw that could tighen it up but can't see or feel one. From reading others about dash issues, it sounds like to get in there, I have to remove a lot of it - but want to confirm before I go down that rabbit hole of time...

See / hear in video:

168Sierra

IIRTC there’s are two screws at the lower left corner of the dash and one on the right side of the diagnostic port. You may have to remove the carpet surrounding the fuse panel to access them.