shifting from overdrive to drive on 1998 Dodge Ram 2500

i have had this truck into 3 different dealers and they cant seem to figure out why it keeps doing this after i have put almost 2000 in their pockets can anyone help?appp sensor done abs sensor done turbo actuator done

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3 answers 3 comments
I own a dodge 2500 diesel 4 x 4 and I had three throttle position sensors go out, but besides that I have 228,000 miles on it. What is going on with yours?
My sister in-law has a 1999 and her trans was shifting from drive to over drive but her door lock fuse shorted out and I told her about our common problems section and she printed it out and showed the mechanic and sure enough she had a fuse out here's a copy of what it said : If the engine cranks but does not start, or starts and stalls, the fuses should be inspected, especially the power door locks fuse. The power door lock fuse provides power to a module that sends the Powertrain Control Module (PCM) an "OK to start" signal.
Also when my truck was fairly new it was shifting funny and the dealer flashed my computer and solved the problem. here's some info from the TSB's section of Repairpal.com : Drive Train: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
Service Bulletin Number: 180299
NHTSA Number: 604105
Model Years Affected: 1998, 1999
Date of Bulletin: 04/1999

Bulletin Summary: SUBJECT REGARDING ERRATIC TORQUE CONVERTER CLUTCH (TCC) OPERATION.
Please provide a more detailed description on the symptoms and conditiond relating to the shifting issues, ie: engine temp, vehicle speed, gear shift position etc. Also, check and verify that the fluid level is correct and the fluid condition is good. The TSB listed below will not correct the condition as the overdrive unit is in the tail housing. the Torque Converter clutch only provides "lockup" reducing converter slippage for more of a direct drive. No relation to Overdrive operation.
All you have to do is reroute the ground wire that runs by your alternater to the top of your radiator and this will fix it if you need more info send message to Bigbubba411@gmail.com
to hel you first i need to know is the transmission or the gearshifter in the steering column