How to fix oil pressure loss, after overfilling engine oil. Repair question.

You say you drained some out and the noise is gone? AND the oil pressure light is no longer on? I would say run like hell , from whoever is trying to sell you major repairs!!! Long story -short , years ago , lil ol' me , did the same thing with a Dodge intrepid 3.3L and exact same symptoms , I freaked out!! Drove it very carefully home(smoking and rattling, assuming the engine was trashed), Realized what I had done , SIMPLY DRAINED THE OIL AND ADDED THE CORRECT AMOUNT , and proceeded to get another 100,000 or so miles out of it!! Worst case , bring it to a different shop and ask them to simply perform an 'oil pressure test' No need to fill them in on details other than the overfilling part , just pay them to test it and it will be good money spent to put your mind (and wallet) at ease!--- Hint-- IF noise is gone AND no 'idiot light' is on , I'm pretty sure you will get the results I expect. Good luck!