Have only had the H3 a couple months now. It had 125k on it when I bought it. First transmission lost the 3-4 clutch pack in like a week. The dealer where I bought it replaced the trans with a used one supossedly with about 100k miles on it. I've had this one for just under a month and I first noticed it shifting a little hard from 1-2 intermittently. Last night pulling out slow out of McDonalds it banged really hard and It felt like the rear passenger tire broke traction. (35's) At first I thought I might have ran over something but then the check engine light came on. I checked the codes (while I was driving) and there was a P0716 and a P0717. Still seemed to be driving ok until I came to a stop then it wouldn't go again unless I put it in 2 (or 1). Figgured great, I'm going to have to drive all the way home (still an hour and a half away) in 2nd gear.... AGAIN! It actually went into 3 and drive if I shifted it manually once up to speed though and I drove it home and then to the dealer where I bought it this morning. They are going to put another used transmission in it no charge. From the sounds of it the imput sprag went bad this time. I cleared the codes and it made no difference but the codes didn't come back. I'm a little worried those codes may be something with the wiring in the actual truck and were actually the cause though. What are the chances of that?