my car won't shift out of park, why?

I believe GM puts an electrical switch that will only allow the gear shift to move from park when the ignition switch is on and the brake pedal depressed. I had problems with it sometimes working and sometimes not so I had to keep switching the key on and off & depressing the brake pedal until it worked. I opened up the console, and cut the wires to the gearshift assembly - put a piece of heat shrink on the wire ends from wherever they come from and VIOLA - no more stuck in Park - What this technique does is allows the gearshift to come out of park without depressing the brake pedal I sold the car 4 years ago and cannot remember whether the ignition still had to be on or not to shift out of park- I was the only driver and we have no kids so it was not a big deal to have this "safety feature" disabled. Hope this helps

Thank you for your help, I did not know you could simply cut the wire, very helpful.

Easiest trick is that the locking steering wheel is in a unique position when you park .. Try turning your ignition key to on , and pull your steering wheel back and forth with some muscle power ..

For all the questions below of people who can't get their gear shifter out of park ,try to do what I suggested ,its just a strange angle your tires get into when you park..

You Can drill a hole by the passenger seat and Put your finger in to press a silver button to release the lever