Ok, after extensive searching, I came up with this thread:
http://www.grandprixforums.net/showthread.php?t=61218

So that IS the axle I have in hand, but this is what my passenger side looks like. 20160913_070829.jpg

So, what the heck is sticking out of the differential? And how do I remove it?

99 grand prix 3.8 na
All stock, axles replaced 4 years ago without issue.

Thanks,
Jon


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