Have a1998 Durango 5.2L Auto w/ OD. Check engine light came on the other day as soon as put into Drive. Used a code reader and got 2 codes first was P0753, secound was P0743. Do I need to replace these solenoids? or possibly just one? if so what is the P0753 one called? I called a local parts dealer and asked for a shift solenoid, and was told they didnt have one listed.

 

P0743 Torque Conv Clutch Solenoid/Trans Relay Circs

P0783 3-4 Shift Sol, No RPM Drop at Lockup

First, check your fluid and make sure its clean and at the proper level. Then, check the trans relay in the PDC under the hood... If that's all good then it looks like your due for a Governor Pressure sensor and a overdrive/lockup solenoid..

Here's a thread i did on how to do it as i just did it myself ~~> https://dodgeforum.com/forum/1st-gen-durango/346274-how-to-install-overdrive-lockup-gov-pressure-and-tranducer-solenoids.html#post2944329

It looks like you are kinda close to me, if you need any guidance on how to do it let me know...