I have a 06 1500 5.7 4x4 with no transmission issues until one day jumped in threw it drive (never felt it engage) but being on a slight hill i rolled down and when I went to give it gas.. nothing just revs. Put into N back to drive and nothing. Pulled over and put it into park and heard a loud grinding. After scratching my head for a bit I put it into drive again (no movement) then put it in 4HI, felt a big clunk and I was able to drive, limped it into my garage where I could try and figure it out.

Ran my scanner and a transmission code for low voltage was showing so I cleared it and then my truck magically worked normally again. (Was on flat surface in garage)

A few days later had my truck parked on the hill again and same thing. But this time 4HI made some terrible grinding so I shut it down, called a tow truck and sent it to a transmission shop. Of course everything worked when it was dropped off and they said it was probably because I was a liter low of fluid so they serviced it and sent me on my way.

About a week later (parked on same hill) after driving it a few times prior, same problem. No codes, just revs. Tire is resting on the curb because I don't trust my e-brake.

Sorry for this massive story but im just out of ideas, and want to avoid having it towed again.

Thanks for reading
Mike

 

Did you check your transfer case linkage?

 

No I hadn't, ill look first thing in the morning, thanks!