[lfunk11]

So a few years ago I was having issues with the shift indicator on the dash registering park and neutral. I ended up replacing the Transmission range solenoid and everything was great. Well, I don't really drive the truck much and now about 3000 miles later (2 years) I am having the same issue. I ordered a new one and replaced it, but now it still won't go into park or neutral. I haven't put the pan back on or fluid back in, but I doubt that is the reason. I am pretty sure there isn't a separate neutral safety switch so I am not sure what else to check. The old TRS had one of the "pins" stuck so I assume that is the issue. I am going to take the valve body out now and just be sure everything is lined up.

2004 Ram 1500 2WD with Hemi. I am pretty sure it is the 545rfe - correct?

I basically only use this truck to get my boat to and from the marina. Have had issues with the boat and just want to get it back into the water to salvage the last month or so before it gets cold

 

[lfunk11]

took the valve body off again and one of the pins on the new TRS was stuck. The same pin that was stuck on the old one. Called to local dealership to get a new TRS and then put that on and figured I wouldn't hook up the battery or anything until I got things back together. Well, got all that done and same darn thing. Won't register park or neutral. Has to be some other issue

I guess not boat this weekend :i_rolleyes:

 

[TransEngineer]

So what do you get on the PRNDL display? Everything "boxed" at once? Will the engine start (when it's really in Park or Neutral)?

I'm guessing there is a problem with the T41 circuit. The TRS uses five (5) pins. The first one (C1) is grounded only in Park and Neutral. It is at pin #4 on the solenoid connector, and is connected to the T41 circuit in the wiring harness. I'd guess the wire in the T41 circuit is broken. Check the resistance of the T41 circuit from the PCM to the transmission connector. This should be a yellow wire with light or dark blue tracer, that runs from pin 21 on the C3 connector of the PCM, to pin 4 on the transmission connector. It runs through a splice (S123) between the two ends, and also runs through pin A3 of the C130 connector (which I believe is on the firewall, but I'm not sure).