Failed Oil Pump on 1996 Chevrolet Lumina

The car stalled while driving. Repair shop says there's no oil pressure so oil pump must have failed and needs replacing. $750. Q: How common is oil pump failure and can it be clogged oil galleries? The oil is very dirty, I don't know when my son last changed it.

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers
it is not a common failure but not changing the oil can cause all kinds of failures.
with dirty oil, any passage could be clogged with sludge

Roy
Could it cause zero oil pressure? And can it be flushed out instead of paying $750 plus? They may find other things wrong after replacing it?