Sorry for the delayed response. Life has been hectic the last couple of months. I have not figured out what the issue is with mine yet. I recently had a mechanic suggest a power flush on my transmission. Another mentioned the speed sensor. I hope to have time this week to deal with it now that school is out for winter break. I will let you know when I get it done. As for the electronic shift control, I will look for it too.
hey i notice your also having shifting issues. i might be able to help you . i have been testing and trying every thing under the sun .my book tells me my electronic shift control module is in my right kick panel, on the right hand side of the truck. Wondering if you tried changing yours? The kick panel is down by the vent, I can't find mine, don't have one...do you? And have you replaced it yet? thanks ...