Brand new off the lot, hadn't realized issue until playing with stereo balance controls the next day. Speaker in rear passenger door on the drivers side is not working intermittently. Sometimes there's no sound at all, sometimes it's faint, sometimes it's crackling, and sometimes it's fine.

Definitely seems like a loose connection/wire. Although I'm sure I could easily fix it myself, it's a brand new car under warranty! I wasn't about to go through the trouble of removing door panel just to fix a poor quality control issue.

Scheduled an appointment with dealer, waited a week. They took my car for a day without a loaner, only to tell me that "it was working fine and we couldn't open it up to look unless we verify the issue." The joy of intermittent problems...

Not a serious issue overall, but it just shows the lack of quality control from chevy and poor customer service of my dealer...