Maybe. But why would it act that way while driving and never engaging? I'm thinking chain or shift fork to be honest.
I did the tests. With hubs locked TC in 2wd the driveshaft does not spin. With the hubs unlocked and the TC in 4HI or 4LOW the driveshaft still spins. When I drive in either 4x4 mode you can tell its engaged by the way the truck. Especially in 4LOW. And you can hear the TC motor switch and the suitable lights come on the dash for both modesThese are very straight forward machines. There are troubleshooting techniques that prove/disprove a possibility and remove the guesswork this thread continues with.
It is a very straight forward process to isolate IF the TC is engaged or not. It was discussed by raising the front end safely on jackstands and rotating various parts of driveline by hand. Then attempting same with front hubs locked and unlocked.
There are also archived threads on how to test the shift motor/relay which allow you to isolate those specific issues.
I haven't gotten that far with it been slammed with work and I dont get off till 1 am. I'm gonna try to get to it in this weekend. I'm thinking internal as wellJust because the rear side is in low, doesn't mean the front is. Imo, the tcase needs rebuilt. Likely a shift fork issue.
Can't you remove the motor and manually shift it?
Sent from my SM-G988U using Tapatalk