Chrysler Repair: 2000 Dodge Stratus Will Not Shift out of 1st Gear, solenoid pack, digit code number

Question
Roland, I have a 2000 Dodge Stratus that will not shift out of first gear.  I had the solenoid pack changed out 40k miles ago which cleared up a similar problem.  It was very expensive, so I would like to try to do the repair this time.  The car has a bad battery which requires it to be jumped to start.  I don't know if this would be the cause of the problem or not, but I plan to change it out.  Is this a solenoid pack problem?  Where can I get information on how to change this out?  

Thank you for your help.

John O.

Answer
Hi John,
In actuality it is only operating in 2nd gear, what is called limp-in which avoids unnecessary damage.
The best approach is to get a fault code readout from the underdash socket which accesses the digital data bus so you can retrieve the transmission fault code(s). Once you have the 4-digit code number(s) we are then in a position to see what the manuals say to do. There are many possibilities so take advantage of the self-diagnostic capability to find out what is wrong. Possibly the a low-normal battery voltage could be involved, but a long shot.
For possibly getting a free readout, try an Autozone parts store. Otherwise an independent shop might give you the lowest price readout compared to a dealer.
Roland