Trans problem

Yes my firends sister has a 95 eighty eighty and it will not siwtch into second gear it just falls in netrual any idea why or can you tell me whats goin on. It is an automatic

THANKS

I found that when my 88 and my 89 had shifting problems it had something to do with the shifting module. I'm not sure about your model, but, my shifting module looks like a little fuel filter and it is held by a little bracket on the side of my transmission. perhaps give that a try.