My rear speakers no longer work, is there a fuse to check? when i full fade to rear i hear faint music,,,could the amp (stock) have gone bad?

 

Welcome to HAF.
Unfortunatley there is not a fuse controlling the rear speakers. The sound system doesn't fail too often and when it does there are really no repairs you can make, you have to replace the bad item.

I would start buy checking your rear speakers. Try hooking them to another system. If they work you know it's not the speakers.
Then check the wiring. If it is not either of those you probably have to replace your radio.