Are there 2 speed sensors on a Saturn L200?

Answer:
There sure are. There is an output sensor and an input sensor on the automatic transmissions. The output sensor is external, controls the speedometer, and is easily changed. The input sensor is a nightmare! It is internal, and believed to control the shift points. Some GM dealers will tell you that it is external, and not a problem, but don't believe it. It is inside the transmission right behind the valve body, which must be removed. In order to remove the pan and valve body, (as well as the filter), you must remove the transmission from the car!!! If the problem is intermittent like mine, and it still shifts normally, just reset the check engine light and ignore it.
First answer by ID1109444194. Last edit by ID1109444194. Question popularity: 1 [recommend question].