Chosen Solution
I have a 1994 gmc 4x4. When you put the truck in 1st or 2nd it will not go. When in drive or over drive it shifts through all gears with a small slip between 2nd and 3rd. Anyone know what may cause this
This is sounding like a transmission problem. I would take it to your nearest auto repair shop and have them take a look at it, as gear slipping and not going on certain gears is a clear sign that something is wrong with it.
