Radio/tape Cd Player problems of the 2008 Chevrolet HHR

This issue involves a 2008 Chevrolet Hhr with the base radio system. The main door mounted radio speakers stopped functioning in 2017. The a-pillar high frequency "tweeter" speakers continue to work but are unintelligible. With the main radio speakers out, two safety features no longer work; the seat belt warning chime and the onstar subscription safety service. I believe both these systems rely on the driver's side door mounted speaker. Other safety chimes, if any, would also be affected. This is not an isolated case as I personally know of other Hhrs with the same issue.

2008 Chevrolet Hhr. Door locks stick. Vehicle has locked me in. Door locks still stick. Has been in dealer eight times where purchased to be fixed. Purchased new . Have all work orders . Also have had trouble with radio and tire pressure . We have video of me being locked in vehicle and door locks sticking. We purchased the 2008 Hhr in good faith the door locks have given us trouble from day one of purchase. Gm had people come from main office to dealer they have seen the work orders and video of door locks sticking. Rep. From gm told me I could always climb out the window.