When i put the key in the ignition the stearing wheel moves but the ignition wont turn and the gear shifter wont move

Here's a company that has pages and descriptions of how toreplace the ignition switch on GM vehicles. They are broken down into step by step detailed instructions. Here is alink to that page. They covers many ofthe in-dash ignition switches from 1997 to 2006 too. http://www.steeringcolumnservices.com/steering-column-repair-how-to-instructions/gm-buick-cadillac-chevrolet-oldsmobile-pontiac.php Lastly, I would have a new switch in hand before you begin, tosee what you are working on (hidden in the column) and accomplish finishingthis job quickly. Good luck