Where is the crankshaft position sensor. On a 1997 Oldsmobile achieva?

THE CRANKSHAFT SENSOR IS ON THE FRONT SIDE OF MOTOR DIRECTLY BEHIND THE STARTER......ITS VERY HARD TO SEE BUT IT CAN BE FELT TO PUT A SOCKET WRENCH ON IT....REMOVE WIRING PLUG BEFORE DOING THIS... IT MUST BE PLUGED IN CORRECTLY FOR THE MOTOR TO RUN AND CAN NOT BE BY PASSED. THERE IS ALSO A CAMSHAFT SENSOR ON THE TOP FRONT SIDE OF MOTOR ....ON THE HEAD