Re: change radio..
Before doing too much to replace your radio, check all of the wiring connections under the stingray (the large top section that the radio mounts into). Some are push/clip style and some are push/twist style. I have found loose connections more than once after having service done that required the removal of the stingray. It is easy to not make the connections fully or to sometimes forget them at all. If the connections aren't completely tight it can result in some unusual combinations of speakers not working.
US Army (Ret)
I don't like making plans for the day....because then the word "premeditated" gets thrown around in the courtroom.