ok i dont' knwo what its called, but i may need to replace it, the thing on the steering colum that u put the key in and turn.. mines not turning.. how hard is it to replace.

 

You want to replace your ignition lock cylinder (aka the thingy you put your key in) but it can be a bit difficult a/o time consuming if you don't know what you're doing

You'll need to remove your steering wheel, which will require a wheel puller if you want to do it right, as well as a lock plate remover. You can rent those for a refundable $15/each from Autozone.

There are other posts about this, one by vader I believe, you can do a search for them using "lock cylinder" and read up on it.. I might also suggest buying a Haynes guide ($15 anywhere).. Chapter 10 or 11 covers your steering column.. and the other 9 chapters are helpful for about everything else.

I will say this however, if you can't turn your key in the ignition anyway, you will probably have a terrible time removing the cylinder. a new lock cylinder can run you from $10 (at autozone) to $25 (OE from a GM dealer)... if you call a locksmith out you can have them replace the cylinder for $60 if they're close to where your car is, ... but I also had quotes up to $105 when my keys were stolen (and had no spares).

Need anymore info, lmk

James