chevy corsica 1989 150000mi 2.8l

It is located on the right side of the motor (towards rear of car) slightly towards the passenger side centrally located on the block. You get to it from the bottom of the car.There is one wire going to it. Squeeze the broad part of the connector and pull and the connector will come out. Use proper size socket and rachet wrench with appropriate extensions and unscrew sensor. Install new sensor by srewing in the new one and pushing wire connector back on.
Done