Its a Grand Cherokee, with a 3.7 engine, full time 4 wheel drive.

This is the second time it has happened. First was at 35500 miles and now this time. First time it was determined a solenoid on the valve body was bad, replaced all is well, under warranty. Now it is doing it again. Was told the solenoid is built into the valve body. IS that true, everything has to be replaced?

It wont shift out of 2nd I believe, will only do about 40. You can shut the engine off, restart it, and it is fine. I guess the same issue again. Anything to look for, something I can do at home? How hard is it to replace the valve body laying under it?

Thanks Bill