Chrysler Repair: 2006 Chrysler T&C Transmission Issues, powertrain control module, transmission control module

Question
I have a 2006 Town & Country that is driving me crazy. At presently has 7600 miles It was OK for the first couple of thousand miles but not perfect.  When I come to a stop or begin to drive from a stopped position the geering is all messed up and I seem to "bang" into the correct geer.  It is almost like the geers are slipping.  I have taken this van into the shop twice already for the same thing and Chrysler states that they know they have a problem and CAN'T fix it.  They said it is something in the computer.  The second time I took it in they tried to convince me that it was fine at that time but I figured out that if they disconnect the battery and reset the computer I can drive about 500 miles with only a minor slipping problem.  They had a Chrysler rep come and drive it but he drove it after they reset the computer. Eventually comes back to the point where every stop is a problem.  Any suggestions?

Answer
Keep pushing the issue with the dealership or go to another dealership that has someone more qualified to work on transmissions.

There are too many things that can cause the condition you described for me to be able to pin-point it for you.  Also, I don't do internal transmission repair so full on diagnostics isn't my specialty in that area either.

I do know that there have been several software updates over the past years for the transmission control module, the powertrain control module and revised parts that may help with shudders, trembles and harsh shifts.  

There's also a procedure where the dealership mechanic can force the trans controller to relearn certain values inside the transmission.  This procedure is called a quick-learn.  Prior to this procedure the mechanic should read a set of values in the scan tool called CVI's.  These are basically measurements the computer takes of how much volume of fluid is required to fill up voids between clutches.  Excessive volumes could mean worn seals or clutches.  It's crucial to record this information prior to the quick-learn so that they can see a before and after picture of what the computer perceives is going on inside the transmission.

After the quick-learn the car normally will drive better but sometimes an additional quick-learn may help.  Have the mechanic read you the current software number for both the powertrain control module and the transmission control module.  Also try and watch him punch the numbers in to the computer to see if any new versions are available for your vehicle.  

If you can't get anywhere with the dealership then start working the next level.  Have all of your repair orders in hand when you start making phone calls to Daimler-Chrysler.  Make sure each time you go in to the dealership that your description of the complaint is on the work order, the mileage and date is on there and that the mileage out has changed from the time you dropped the car off too.  Most places should drive a car 8-10 miles for a driveability concern like yours.  You've been in twice already, you've had a rep in there but like you said, they already made changes so it may not have been as noticeable then.  Make sure the dealership knows that the buck doesn't stop with them and Daimler-Chrysler is just a phone call away.
Doug