I recently had a new conductor assembly put in the truck as well as a new shifter (used shifter, new to the truck). Car was running fine for a week then Sunday, started the truck and it would not shift out of 2nd gear. I would guess it's limp mode but there was no CEL. Shut it down, came back 3 hours later and tried again. Still wouldn't shift out of 2nd and still no CEL.

Took the truck back to the shop on Monday and it drove fine on the way there. After them having the truck for 2 days, the report from the shop is that there are no engine codes, no transmission codes and the truck is driving fine for them every time they test drive it. What the $%^& could it be? The shop owner said if the truck had been in limp mode, there would be evidence of it and there isn't and code indicating limp mode.

Any ideas?

__________________
1999 ML 430