Quote Originally Posted by orion View Post
WoW, that's a tuffy. if it was one of the speed sensors i think the check light would come on. and if the electric clutch coil failed it would set off the light. my guess is either the clutch pack is not holding(witch should turn the light on), or the TOD computer has a fault.
Isn't shifting into 4LO a mechanical linkage? That is, doesn't that go around the TOD clutchpack and ignore the speed sensors? I was thinking it was a shaft missing between the engine and the front diff. It would have to be AFTER the speed sensor, though, or else TOD'd would be trying to get those wheels moving...

I nominate the front diff.

Just a wild *** guess, though...