well the truck has 78000 and im not sure if the trans was flushed or not kinda thinkin bout goin that rout cause it towed a goose neck for may of those miles befo i got it

 

What temp was it outside when you did this? Was the trans. warmed up? The allison trans. pushes IIR 78 pounds of pressure to shift and if it is cold and the allison isn't somewhat warmed up it wont shift right either. Had this happen to me on a 2002 about 2 years ago and two nights ago with my 2003.

 

it has been cold the past couple days so im not sure cause the trans gauge dosent move all that much anyway when its warm

 

Careful about "flushing" it. You can damage the tranny that way.

 

check out the hoot method