I have a 2003 durango 2wd v8 , it shifts great from 1 to 2 and from 2 to 3
very smooth , and good but it dosen't shift to four when the speed crosse 60 Mile. (110 k.m) and engine pressure stope at 3 almost ..
i checked all fuses and it's working !
dose anyone have a background about this issue ?

 

Which engine do you have?

Also what exactly do you mean by "and engine pressure stope at 3 almost"?

 

i have SLT 5.9L 4 speed transmission
sorry for wrong term .. i Mean RPM
i just replace 3 4 SHIFT LOCK UP SOLENOID TRANSMISSION .. but i still have the same problem

 

So you have 3 forward gears, but no 4th gear? 4th gear control by the PCM and the valve body. Your best bet is get the vehicle into a shop and find out what is wrong. I can only guess at this point. You just don't want to throw parts into the vehicle and hope it fix's the problem.

 

+1

I had the same issue for a pretty long time. Mine turned out to be a failed seal in the overdrive piston.

 

well , from a while i replaced my PCM and key switch from 2002 Durango for the same engine , but before i replace sometime it hang and sometime it shift , after i replaced i didn't shift to 4 anymore and the AC stopped
do you think there's different between 2002 PCM 5.9L and 2003 5.9L ?
Thank you all for your replies .

 

You have a PCM issue. As for 2002 and 2003 they did some upgrading so they might not work.

 

Powertrain control modules has a vin number burn into the software, that has all the information the vehicle should have. After you replace the PCM, did you notice the ABS and brake light stay on for a while? If it did, that's because the ABS module was getting a mismatch vin number from the PCM. Do you still have the old PCM and Skeem module? That's for the ignition key