I have a 2000 Chevy Impala, my ingnition key was stuck so I changed the key and switch, however my steering wheel don't lock. Is it a switch in the column to send the 12v to the starter to stop the voltage from being sent.
Sorry Misterp28 but we're primarily a classic Impala site, 50's, 60's, some early 70's. Probably not a ton of direct experience here on the 2000 Chevy.
I would expect that you're basically correct. Like for any car, turning the key takes takes the hot 12V and sends it to the ignition module and/or starter depending upon how far you turn the key. Either way, I'd suspect a 12V feed has to come up into the column for that to happen.
Most troubleshooting begins with "what changed last?" There's a slim change you blew a fuse, but either way you could look for a connector under the dash for the wires going up the column. If you find that, one of the wires should be a hot 12V.
I'm not an expert, just some educated guessing there. Good luck!