your key is probably wore out and tumblers are not moving
Check your fuses
I would replace the lock cylinder.
the car will not start buy the key but all the electoroics come on in the car but if you cross the post on the starter it will run for a minute and die
One reason a 1993 Chevy Lumina may turn over but not start could be the battery. It may also be the spark plugs.
By turning the ignition key...
I own a '96 Chevy Lumina that has the same problem and it sounds like it is a fairly common problem. I don't actually have the solution, however I know that if I turn the car to the on position and sit for a couple of minutes, then try and crank it over, it will magically start. I was thinking maybe there is just a bad connection or wire somewhere in the ignition system.
With the key stuck in the accessory position the steering wheel is locked and the gearshift is locked in the park position. Perhaps you should consider having a locksmith change the key cylinder where it is, or else have it towed to the garage.
Try adding more gas
if the battery is dead the switch wont unlock or start
You can't, you have to replace the ignition switch
My 2002 GMC Envoy won't start,no lights come on when trying to jump start the battery. And my key won't remove from the ignition. What's should i do?
Most oxygen sensors are either on the exaust headpipe just after the manifold or on the manifold. I don't know where it is exactly on the Lumina but that is where you should start looking.