Hey guys, I'm not much of a truck guy but I'm helping my neighbor out with his shifter. He has a '97 Silverado z71. Anyways, the truck runs well and starts with no problems, but if you start the car in Park, it will not shift out of park no matter what you do. The only way to fix it is if you put the key in, move it slightly forward. Once you do this, it releases the shifter and you can shift it into neutral. Once you do that, you can start the car and shift freely. It's just Park that it get's stuck. Anyone know what it could be?