trans limp mode
 

2008 avenger stuck in limp mode i changed both speed sensors,TCM,and trans solenoid nothing works, getting codes p700 and p0750

Fluid and filter.

Yes i also changed fluid and filter

For those codes, the only real solution is to acquire a scan tool that will communicate with the transmission control module. Extracting this code from the TCM will be the first step in repairing the fault in the transmission.