Chiming in as I have a sunroof problem and see you guys might have some(used) parts other than new stock GM parts?
My sunroof a year or two ago, when coming back up to close(from sliding back), heard something break, managed to get it forward and into position. From what I have read you have to buy ...

Oil level is up and fine. Actually changed oil and added 5 qts to be sure

Anyone have an idea of the part number of this sender?
Been searching the different GM parts sites and only can find the oil psi sender.

Thanks.

I have a 2000 SSEI and the Low Oil Level warning comes on from the Driver Info. center. I had a new oil psi sending unit put in and oil psi is fine(year ago). No oil leaks as those were fixed when I had the intake manifold gaskets done. (had coolant in the oil)
That was about a year ago. Was lucky ...