I have a 99 2500 diesel and tranny just all of a sudden stopped wanting to shift to third and won't shift to 4 th gear. I pulled into gS station to grab drink came back out and started it took off and wod not shift properly. All fluid is good and clean have never had any issues with tranny other than. Grounded issue that I have taken care of. Any ideas it's o the side of the road I picked up a speed sensor and wanted to make sure there was nothing else to grab since it's out I. The middle of bfe

 

I closed this thread due to you having an identical thread already open for this problem.