I have a 2001 Ram 2500 with CTD, and I believe the 46RE tranny. 160k mileage. Recently the tranny has started doing tricks, somewhat consistently in colder weather. After driving just a little (a few blocks), if I go to reverse and back to forward, like to turn around in a tight place, the tranny seems to let go, pretty much like being in neutral. Going to R and back to D doesn't usually do anything. After maybe 5 seconds at idle, there is the usual mild jolt like when you first select Drive, and off you go normally. The severity of this varies somewhat, possibly with ambient temperature, and I don't think it has happened when the truck is completely warmed up. At first, I thought it had to do with the slope of the ground where the truck was parked, but now I'm not too sure about that. Is this likely to be the computer gadget, and if so, is dealing with that an external process? I'll be taking it to a shop, but I first wanted to get a feel for what's going on.
Thanks, Bill