Here's an odd problem.
2001 Bonnevile SSEi. On occasion, my tachometer will zero out. No revs registering. The car is still running just fine. There is a tiny little hiccup when it does this, but it is so slight it is easy to miss. One time it did this, the check engine light came on. Got it checked out, Error code was "Camshaft Position Sensor Failure." Next time I turned on the car, engine light is off.
Now I don't suspect it is that sensor, because everything I read says if that sensor is bad, it is an engine kill failure. No starting, no running, nothing if that sensor fails.
I'm running out of ideas. I know there is SOMETHING wrong, but I sure as hell can't figure out what it is.