My gear selector light is only lighting in R-3-1- .
The door locks aren't unlocking when I shut the
truck off . This started after real cold weather and
the gear shift felt real hard going into gear .
This is an Allison and I think its the selector on
the side of the Trans ? I would like some Info from
all of you . Thanks :rolleyes:

Sounds suspiciously like NSBU symptoms. If you have to replace, get it from an Allison distributor of at all possible, due to much lower cost.

Up And Running . Thank You :cool: