This sounds normal to me. When the RPM's jump up, it's downshifting to the next lower gear.
See what happens if you have it in power mode when you do this, sounds like it's just eager to be in the higher gear so as to save fuel. If you floor it, does it stay in the gear? I mean floor it....robs said:Bear with me here guys.. I still think something is not right. Another symptom is that when just cruising above 50 or so the truck is in 4th. If I press the accelerator hard, the tranny down shift into 3rd and then immediately shifts back into 4th so I don't get the pickup I need. It feels like it's having a problem with the 3rd to 4th transition. The change is smooth but just not expected. Are there any sensors that control these shift points or something else I should look into.
I know if I take it into a mechanic and tell them this, they will immediately want to rebuild/replace. I'm hoping to have as much info as possible as I don't know much about these systems
Thanks