From your description, it does sound like a sensor. However, there is also the possibility of a bad connector or a broken or shorted wire in between the PCM and the transmission. This sensor reads the speed of the input side of the transmission. There is another sensor on the output side. The two sensors are compared by the PCM. That is how the PCM knows if the transmission is in the gear that it has commanded. Since all of the gears are there, it would seem to eliminate the possibility of a mechanical failure. The component that corresponds to the sensor is a toothed wheel on a part that is directly connected to the input shaft (turbine shaft). If that were not turning, the transmission would not move the truck. I suspect that your problem is either that you have replaced the wrong sensor or that there is a break in the wiring between the trans and the PCM. Recheck to see that you have replaced the correct sensor.
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Today's Featured Article - Bad Vibes - by Curtis Von Fange. One of the strangest ways to communicate with our tractor is to ask it how it feels. "Ask it how it feels," you say? Yup, ask it how it feels. Now, as with the other articles in this series one has to be able to hear what 'ole blue' is trying to say in response. The nice thing about our old iron friends is that they are usually quite consistent in their response, rather unlike some people I know who might change what they say due to the weather or other mitigating circumstances. But since t
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