hey guys. I have a clean original 81 vette, don't post often because I hardly touch it. waiting to get some $$ and then going to do lots of work. anyway, I have an 06 GTO with an ls2 that I do all my own wrenching on. a friend of mine recently picked up an 06 ls2 vette. it is bone stock. I am doing an oil change on it this weekend, and the other day we noticed his oil pressure gauge start going crazy, reading 0, then maxing out, and bouncing all around. Oil is dirty, but the level is fine, there is no ticking and the engine is running and revving great. I am assuming there is an issue with the oil pressure sensor? is this common? any tips? thanks!