Quote:
Originally Posted by arpad_m
I read that GM changes part numbers whenever they change suppliers for a part even if specs remain identical, but I'm not on the inside, so not sure if that's the case here.
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This is probably the case. I'm in Aerospace & Defense and this is SOP for us.
It's for lot traceability. If you start getting failures / returns of a unit, or system, you can start using information like what part numbers changed around that time to help track down and troubleshoot issues. Sometimes it can be an entirely different part number, or sometimes just a revision. That comes down to company policy in my experience.