2011 Cadillac CTS 200k miles

Hi guy’s, just replaced the alternator in my cadillac that conked out last week, repair went fine and all systems are working better then they were leading up to it failing, the only thing that stopped working were my speaker system. The radio appears to be fine it scans for stations and picks them up fine but anything having to do with the the speakers is silent, even the voice commands and OnStar there is nothing. I’ve checked fuses they all seam to be in order nothing popped, just no sound from speakers at all no clicking or static nothing just silence and it’s driving me crazy, it’s the stock system it came with and it’s awesome so this really sucks, any help would be appreciated, is there a reset, or off panal fuse? I haven’t seen anyone else have this issue, the closest I’ve seen is people burning out their radio where it doesn’t turn on at all