Dear Chuck, Jim, Bill, Brian, and mid-60s Buick caregivers,
Got to work this afternoon and with the help of my neighbor, got the pan removed, installed the new oil pump and replaced the pan.
. . . .
Sorry you had to take this step but hope this will cure
da' patient! I think you can disassemble the old pump fairly easily and do a failure analysis on it.
If you take the time to dismantle the pump, do let us know what you discover.
Cheers, Edouard