I have a 1994 silverado that the floor shifter will not move, its stuck in 2 wd. I can not move it up into 4 wd high or low? Please help if you have this problem and how can I correct it? Thank you in advance.
you're talking about the mechanical transfer case shifter right? If you haven't used it for a while it may be just stuck. With the truck in neutral and the engine off keep rocking the shifter back and forth trying to break it free. Do not use excessive force in case the transfer case shift fork is damaged.