1999 Durango 5.9 4x4 transmission will not shift into o/d. I read hydrashockers article on tranny diagnosis and it said it could be a number of things. Does anyone know where to find the o/d fuse and and the shift solenoids? This is my first dodge and i know where NOTHING is, so any lay persons directions would be greatly appreciated. I recently purchased this vehicle and i am trying to assess the mechanical condition (do i need a simple fuse or solenoid....or a new tranny) Thanks again.

 

I had a similar problem on my Dak. I took her to the dealership and they changed the transmission selenoid and problem fixed!!!

 

The PCM controls the overdrive circuit. You could have a bad 3/4 shift solenoid or the seals for the overdrive piston is not applying the clutches. Need to ck for codes and have a scanner that can tell you what gear the transmission is in when driving.

 

check the tps...mine went bad while i was runnin about 90, came outta o/d, and wouldnt go back in till i changed the tps