are these rivets on holding on my oil pan gasket?
 

cause i sure hope so cause i got pissed and used a drill to get the old damn gasket off. anybody can confirm this? should i replace the rivets or did i mess up my oil pan? i didn't go anywhere near threw the pan...just took the head of it off so the gasket would come off. thanks

They are rivets and don't need to be replaced. GM uses them for ease of install on the assembly line.

Jason

cool thanks