My 1998 Olds Bravada has the key stuck in the ignition. I paid to have a new ignition key cylinder put in, but the new one does the same thing. The key will start the car etc. but won't come out of the lock. What could be the cause?

first i would check your key and ignition switch for problem if key worn or ignition cylinder worn vehicle will have intermittent start --as to anti theft yes their is one

I don't know where you heard that , no a bad starter would not make the key stay stuck in the ignition lock cylinder !!!!!!! Can you put the trans gear selector in park ? or is it in a gear position ?

FIRST OF ALL TURN OFF RADIO TO KEEP FROM LOCKING IT OUT.THEN DISABLE AIRBAG.DISCONNECT NEGATIVE BATTERY CABLE.WAIT 20 MINUTES.MAKE SURE TURN THE STEERING WHEEL SO THAT BOTH WHEELS POINTING STRAIGHT AHEAD.TURN IGNITION SWITCH TO LOCK THEN REMOVE KEY.TO REPLACE THE IGNITION SWITCH.REMOVE THE INSTRUMENT CLUSTER.REMOVE THE 2 SCREWS SECURING THE IGNITION SWITCH.PUSH SWITCH 1 INCH STRAIGHT BACK TO CLEAR THE MOUNTING BRACKET THEN LIFT OUT.TO REMOVE LOCK CYLINDER PUT KEY IN SWITCH TURN TO RUN POSITION THEN DEPRESS THE PIN WITHDRAW THE LOCK CYLINDER.

ignition switch has a anti-theft type lockout in the electronic switch inside steering column - have also had mine do this due to bad connection at the battery - remove both battery bolts and clean terminal and make sure you have a good connection - have also had my starter go out and does same thing - all lights and electronics but no start - had all 3 of these on my bravada in one week!!

try and shift vehicle while its off into park,neutral etc.. and flick key in ignition back and forth and wiggle it

Put the battery on charge or jump it. Basically it's locked in because of the lack of juice.

Ignition lock cylinder tumblers have failed. Replace ignition lock cylinder. Common failure.

you need to replace the whole ignition switch assembly, the swtch may be secured with what you call shear bolts which may have to be drilled out, only you can decide if you are capable of doin this, new bolts should be supplied with the new swith, when you retighten the bolts, the heads will shear off when they are tight enough, the aim of these are to prevent theives making a quick ignition change to steal your car

Remove steering column shroud(cover)and tap ignition barrel with small hammer while twisting key backwards and forwards,also turn steering wheel backwards and forwards sometimes this is enough to release key as the locking pins in barrel and the steering lock pin do sometimes jam.You will have to remove steering column shroud to replace ignition barrel if tapping/hitting it doesnt work anyway so its not a wasted effort.Good luck,let me know how it works out

If all the other gauges are working, then it is definately the sending unit. Mine is out at the moment and has been all summer. Pain in the **** to fix so haven't yet. Have to know however cause the fuel pump went out. Gonna kill 2 birds with 1 stone. We have just been using the digital reader for fuel used to know how much gas is in it. The gas gauge will bounce between half and full but never go below half.