My 2007 Dodge Ram 1500 with 5.7 hemi 4x4 went into limp mode (staying stuck in 4th) the other day. I took it to a mechanic to get the solenoid fixed on it. I took it from the shop and drove it about 5 miles before it did it again. They put a new computer in it and same thing. Anything else that it could be?

 

I just got done fixing my P0750 this past weekend. If it's not the solenoid or the pcm then I think the last place to look is the connector. There's a way to test the pins but I didn't have the tools for it. I'll look for the link that helped me and put it up for you when I get a chance.

 

Sorry, got busy yesterday. I found the video that helped me and hopefully it'll help you. Did your mechanic swap out the filters along with the solenoid?

 

The wiring was all good. Transmission shop put a new valve body on it and fixed the problem.