[200q20v] BUMP IN THE NIGHT

[skikrzy]

I was crusing down the freeway late one night, when out of the blue, I felt
a bump in the night......a  rather unnerving experience. Then a half hr
later, thump again, this was not my imagination or a large expansion joint!
I am worried, it felt like the rear dif lock up kicked in then back out
again, or worse, a momentary sezure at 70 mph. Nothing since. Is this how
the ending comes for the rear dif ? If so, are there rebuilt units out
there? Thanks. Bill