I have a 2006 chevy cobolt and when i try turning it off, even when its in park, the car wont turn off and my key wont come out. what shoud i do?

You can go to you tube videos it helped us change head gasket on our Chevy venture

Does car have power? If so,check neutral lockout switch,make sure car is in park, chip in key could be bad. Buy a Chevy! Lol

There can be a couple things, nutral saftey switch, AC DELCO, NEUTRAL SAFETY SWITCH Direct Replacement Part For OE Number 24219476 `$68.67 , ignition switch not adjusted correctly, try jumping the starter at the starter to see if the starter is working, of course I have just fixed a car that the guy didn't have the shifter in park, try these things and get back to me

Have you tried shifting the gears completely through and then putting the car in park. It sounds like the car isn't able to be put completely in park to release the key. Try putting the car in N and removing the key. Even thought the car may not completely be in park to release the key, The gear most likely is in park but not enough to make the switch/sensor to release.

Normally you need to step down on the brake pedal to release the key and shifter.

If the wheel is turned in either direction, pull the whell in that direction and try getting the key out. If that doesn't do it, try shifting the automatic transmission from Park back to drive, and then to park again to disengage the interlock.

the linkage is bound up and your key wont come out until its in park get it to a garage fast

sounds like your steering column lock is binding you need to slightly turn the steering one way or the other while turning the key at the same time. this happens if the steering wheel is turned after removing the key. or when parked against a curb. 

the shifter needs adjusting. try to remove the key while moving the shifter back and forth in park.

push gear shift to left when in park and turn key off at the same time.