Replacing key ignition lock

Brake-shift interlock The brake-shift interlock feature prevents you from shifting from P(Park) unless the brake pedal is depressed (with the ignition in the On position). If you cannot move the gearshift out of P(Park) with the brake pedal depressed: 1. Turn ignition key to Off. 2. Apply the parking brake. 3. Turn ignition key to Lock and remove the key. 4. Re-insert the ignition key and turn it to Off. 5. Shift the transmission to N(Neutral). 6. Start the vehicle. If you need to use the above procedure, it is possible that a fuse has blown and your brakelamps may not be functioning. Refer to the Roadside emergencies chapter for instructions on replacing fuses.

You are right , it shouldn't shift out of park with out the key in the ignition lock cylinder or with out your foot on the brake pedal ! Now then , won't start how ? When you turn the key to start , the starter spins the engine or doesn't do anything ? Is the anti-theft on the dash flashing or on steady .

Are you able to turn the steering wheel any? It may only turn a little, but that should be enough. Try turning the steering wheel to the left and holding it there tightly while turning your ignition key. If it doesn't work, try turning the steering wheel to the right and holding it there tightly while turning the ignition key. If that doesn't work, try wiggling the steering wheel by turning it back and forth while trying to turn the ignition key. If it still doesn't allow the key to turn, try activating the shift lock release and shifting the car into neutral. Do this by prying open the small square plastic cover next to the shift lever. With the cover removed, apply the brake with your foot and insert a small screwdriver or bic pen into the hole. Push down and move the shift lever to neutral while holding the shift release down. Remove the pen/screwdriver and replace cover. Now try turning the ignition switch. That should work, but if it doesn't let me know and we'll go from there.

The most common causes are the brake switch or the shift lock solenoid.

Fixing stuck key in your gmc envoy same as a blazer !
Ignition Lock Cylinder Control Actuator
If the vehicle is equipped with a floor mounted console gear shifter, it has a ignition lock cylinder control actuator system in the steering column as an added safety feature. The ignition lock cylinder control actuators purpose is to prevent the steering wheel from being locked when the transmission is in gear and the vehicle may still be moving. The column ignition lock system consists of a ignition lock cylinder control acutator, and a park position switch that is located in the A/T shift lock control switch. The ignition lock cylinder control acutator contains a pin that is spring loaded out to mechanically prevent the ignition key cylinder from being turned to the lock position when vehicle transmission is not in the Park position. If vehicle power is lost, and/or the transmission is not in the Park position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.

Your steering locks could be in a bind. Is your steering wheel turned to the side? Try moving the steering wheel while trying to turn the key. If this is not the case, then you most likely have either a worn-out key or a worn-out ignition lock cylinder assembly.
I would first try a different key if you have one. If there is not another key, I would take the Vehicle Identification Number (VIN) to the dealer along with proof of registration and picture ID, and have them cut a NEW key using the key codes for your vehicle. If this does not work, then you will probably have to replace the ignition lock cylinder assembly.

Do the dash lights come on with key on?Try starting it in neutral.Turn key on,and foot on brake,and shift the gear shift into drive,and back into park,kind of hard,Now try to start it.Let me know right what happens,we will go from there.

The solution lies in the interlock with the shift linkage. Make sure the transmission and therefore the shift colomn make it into park or neutral.

I have the same issue. As far as I can tell it's probably the ignition switch and or/ ignition lock assembly. Parts only you can find the switch for $65. If you replace the ignition lock assembly you should have it ordered for your car by VIN # to get a matching key.

follow instructions in manual for SHIFTLOCK RELEASE

Turn off car.
Engage Parking Break
Take ignition key and put into shift lock release slot (near gear shift)
Push down on key and at same time MOVE gear shift to neutral.
Remove key, start car as normal and disengage parking break...

good to go.... mechanic can replace/repair if this is an ongoing issue: $85 I read somewhere...but heard it's not hard to do yourself for $35 someone else wrote.

Goodluck