GM core credits

Any check their credits and match against the return?
I always match up my stuff and on 2 claims now they have kicked some parts back.
One being an alternator and says "non rotating"
The other being a caliper and it says " non rebuildable "
Isn't this the reason we replace these things??????? If that's the case GM should be paying as these were done under warranty!!!!!!!!
I always match up my stuff and on 2 claims now they have kicked some parts back.
One being an alternator and says "non rotating"
The other being a caliper and it says " non rebuildable "
Isn't this the reason we replace these things??????? If that's the case GM should be paying as these were done under warranty!!!!!!!!