oil pressure switch
 

what size are the threads for my oil switch autozone has like 5 different ones

what is a oil switch?

1/4x 18 npt the 93-94 lt1 are different than the 95-97, longer if i remember right.

i was too lazy to type the word pressure again lol... but thanx autozone wants 30$ i just bought one from rockauto of 10$ shipped

It only took him 16 minutes to figure it out. Calling it a switch, which is what it is, can cause confusion. I grew up in the "sending unit" years. ;)