Hey guys, first time posting here. I have a 2004 Ram 2500 5.7L Hemi 2WD. Just replaced the PCM, and took it out for a test drive, and noticed that the cruise control is not working. No light, no cruise, nothing. No check engine lights or other warnings, and the truck seems to be running fine otherwise. Did I pop a fuse or is there something else to check out? Thanks in advance for any help.

 

Did you replace the pcm to fix the cruise in the first place? Most likely cause LF hub assembly.

 

Original issue with PCM was the dreaded P0700/limp mode malfunction- after replacing 2nd tranny it was suggested that I replace the PCM. Did so and tranny is now operating normally but no cruise. Forgive my ignorance but what is LF hub? Left front? Because the two from wheel bearings and hub assemblies are next to be replaced

 

Yes. That's the usual culprit

 

You said you had the PCM flashed, by chance did they remember to include cruise in the program?