2003 Chevrolet Cavalier Input Transmission Speed Sensor

Hi I am trying to locate the Input Transmission Speed Sensor, I have been having some slight issues (very small ones) with my trans and I figure I replace the input and output sensors, I was able to locate and replace the output one but I cannot find where the input ones goes. I found a diagram that shows it on the right side of the trans behind an axle but when I put it on a lift I still cannot see anything. Any advice would help greatly! Thank you!