I have a 2003 duramax diesel and the little digital light went out so you can't tell what gear you are in and have to count. Called Chevy - they said ... bring it in and for $120 we will check it andthen charge you to fix it!!! anyone else have this problem?
Does it seem to shift right? I know that the NSBU switch on the side of the tranny has been known to go out and cause those same symptoms. Although, it think it mostly dealt with the numbers/letters going out. You had it in any wet weather lately?
My prndl started going in and out. It was fine for a while until the tranny started shifting funny and not going into gear. Then when going down the road it just started free-wheeling. It was the gizmo on the shifter on the tranny. My guess is that. I got about a week before it left me sitting. I was able to get it moving by restarting the truck and moving the shifter around. Sometimes it would start out in a higher gear.