CANT TURN KEY IN IGNTION IN MITSUBUISHI ENDEAVOR

You can't remove tumbler unless ignition barrel is remove there's a few ways to remove barrel if not in on position ether drill out locking pin or snap the lock and tumblers to twist in on position so it can be removed I most of the time drill out lock if I can't pick it

chek the battry shoud be discharge

double posted backup one (i gave 3 choices there)
define cant. (cant figure)
or the anti-theft bolts confusing you , the FSM covers all that
why not read that first. then ask questions.

to make cars not easy to seal they make it like this,
90 to now.
it needs to be removed the whole assembly.
anti theft bolts,off, , assmbly off, may take steering wheel off too.
the hand to lock smith (just did a 91) and he
uses special smith drift pins to drive the hidden (backside away from thieves, internal lock pin, he tumbler comes out or he drills it out.
then a new pin, and holding new tumbler, and then test it , ok ,
the reversses all above.
the fsm covers this all step by step, why must you avoid books.
or read alldata.com

Assuming there's no button to press when taking the key out, try rocking the steering wheel to left and right at the same time as trying to remove the key. Sometimes the ignition lock engages at the same time as the steering lock.

You need to take your vehicle to the dealership. They will install a new ignition lock cylinder, it seems as the tumblers in yours are worn. They are able to reprogram your keys to the new lock cylinder so the anti-theft system will recognize your keys.

If the key will not turn it is possibly associated with the steering lock. Try turning the steering wheel back and forth while trying to turn the key. If that does not work, it sounds like you may need a new ignition tumbler.

well if you can get the key in and out but cant turn i would first spray some lube into the tumblers but you have to make sure to get the stuff from the parts store thats for that second is this an automatic on the floor shift if it is it could be shift linkage other thing would be to call a lock smith to come and reset or rekey the lock and if the steering wheel wont lock its usally becuase the tumblers in the lcok are miss aligned or stuck or broken etc...

this is a common issue with this year of Honda, you will need to replace the igntion switch lock assembly, the lock tumblers are jammed..

Your vehicle was build with a GM anti theft device. There is a chip built into the igntion key, when you insert the igntion key the sensor inside the igntion cylinder will read the chip from the key. If for some reason that communication is broken the computer will think someone is trying to steal your car by using the incorrect key.
The first thing I would do is use another key, if you only have one, go to your local GM parts department & have them make you a proper key. You'll need to show proff you own the car, so be prepared to show your drivers license & registration.
If this doesn't resolve your problem then the problem lies with the computer that controls this system. I would recommend to have a repair shop look at it only if they understand GM anti thieft system. you may need to take it to your local Chevy dealership service department.

Do you have a tilt wheel? If so you're only half the way there. The upper actuator is broken. And you got to get into the column further. As for the trick to get the cylinder in. Don't matter if you got a tilt or fixed wheel. Go to the top side of the column. About 2/3 the way down it you'll find the Ign Switch. A rod will be coming out of the top going towards the wheel area. Push it into the switch till the inst panel lights come on. That means that the Ign switch is in the 'ON' sopition. IE all the dash panel lights come on. There is a key on the tumbler that matches to a key in the ign gear. Than just incert the tumbler into the gear and turn it to lock it in.
If you got a non-tilt wheel then it sounds like the bottom of the tumbler is broken off and is still in the gear. If so do the same as above with the Ign Switch. That will align the key so you can take the broken part out and put the new Ign tumbler in.