Someone tampered with my switch 1992 chevy 1500

You may have a key with a chip in it so you will need to hold the old key that has the correct chip in it next to the ignition switch when you try to start the car.

If the thief damaged the 2 wires going down the column from the sensor ring those will have to be repaired. That is what picks up the signal from the key to tell the car to start.

Go to this link for wiring diagrams. http://bbbind.com/free_tsb.html

check the ign fuse,check the ign switch and immobilisor.

yes as its no different then unlocking the car with the key.which i guess you don`t have.if the key tumbler is seized then you might have trouble.odd question if your the owner with a key to the door lock.

look up "92 chevrolet lock cylinder" on www.youtube.com. there will be a video of someone taking one out for you to watch. if not that year there will be one close, they are all pretty much the same

Your truck is equipped with RWAL or rear wheel anti-lock. This just worked on the rear brakes(duh) but the speed sensor was taken from the speedometer drive at the transmission tailshaft, and would allow one rear wheel to lock as long as the speedo kept turning. Later models were improved with wheel speed sensors at each wheel.

frozen or engaged parking brake cable or possible bad brake hose but that would cause both to lock is the other wheel cylinder leaking? that would releave pressure from the wheel . a fluid leak (axle seal or cylinder) can cause the locking feeling because it slips then catches when the fluid wears off hope this helps

you can only push this detent pin in when ignition is in on position try to put key that snapped in and wriggle it around to try and turn ignition to on position so then you can remove barrel
if cant turn need to change whole assembly by un doing shear pin for clamp that holds whole assembly on steering column or do what some lock smiths do drill out old barrel slowly and going up in drill sizes until barrel comes out from housing without damaging housing

If it's the ignition lock cylinder, there is a screw/pin behind the steering wheel. You'll have to remove the wheel lock retaining ring and plate. You'll see the screw just above or below the lock cyl. If I remember, it's about a 5/15 socket that fits it. Oh yea, the key will have to be in the "run" position to remove the cyl.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f60e