Changing ignition switch

Videos and written help.

https://www.google.com/search?q=1999+Olds+Silhouette+replace+ignition+lock+cylinder

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I good tune up may cure your issues but is not garanteed. with a vehicle this old I would change the ignition module(located in the distributor), ignition rotor, ignition cap, ignition wire and the spark plugs and oil change. Check the pick up coil in the distributor if corroded it may be easier just to get a new distributor. As I said no garantees but you stating the fact that it needs plugs this would be a good starting point to get a base line of how the engine is running

it is on the top of the steering column in the truck cab.remove battery cables. remove the lower portion of you dash.loosen the bolts on the plate that holds your column up to the dash. the column will pull down some. you may have a gear indicator tab/string that needs to be undone. remove column clamp blots all the way. the switch is on the top, it has a rod that moves and is postioned on the column. remove old switch, install new switch in th position where the old on was

You can go to www.autozone.com and register for full free online repair manual for your vehicle. It will everything you could ever need for it.

go to link the year is diff but the procedure is the same. scroll to bottom of page

http://www.2carpros.com/forum/1994-chevy-s-10--ignition-lock-cylinder-vt197051.html

Buy a Chiltons, or Haynes manual

Try adjusting the switch on the column. They have slots in them where the bolts go in so you can adjust them by sliding it up or down the column. Pull on the switch where the rod goes in and see if you get anything. Let me know what happens.

http://wareznuke.com/apps/3872/all-1979-2007-vehicle-wiring-diagrams-v42-rapidshare-warez

pull steering wheel

you can purchase a new igition switch at any parts store... just request the cylender and key set