clueless & need help badly..

[Loki]

SeaCrit,

The plastic shif fork in the Tcase is a common part that wears out. When it does your truck will stay in HighLock even though the Tcase selector says it is in High (open)

RV

[H2 Bill]

I have found that the best way of getting it unlocked is to put it in reverse and back up 15 or 20 feet and then taking it out of the locked setting.