Question about Chevrolet Monte Carlo

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Won't start, radio locked, security light flashing and check engine. Disconnected positive battery and connected started. While driving radio locked up again amp dropped out and air quit stopped shut off won't start again.

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If your vehicle has the GM Passkey system, it is possible the security lockout has been engaged. The way to reset the Passkey system is as follows.
1.Turn the key to the ignition "on" position (but do not start the engine) and leave it in the on position for 10 minutes. After the ten minutes has passed, turn the key to the off position.
2. repeat the above step 2 more times. This will take about 30 minutes.
3.Do not attempt to start the vehicle or use any accessories while performing this reset procedure.

I hope this helps.

Posted on Sep 16, 2010

  • Susane Mills
    Susane Mills Apr 27, 2014

    the ignition is stuck in the on position,no matter what i did it will not move to the off position,my opinion is,when i put the key in to start car i heard two weird clicks and then all the sudden the lock position ,the line on there for the lock position when you turn off the car well it is stuck on the ON position and will not move at all no matter what

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Posted on Jan 02, 2017

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97 Chevrolet Lumina. Won't start. Lights, horn, radio all work. Tried jumpstarting. Still nothing. Tapped starter and it started but cuts right off. Noticed Security light flashing. Checked all...


You have a security issue going on. Try turning the key to the on position and leave it on without trying to start the car. Wait about 10 minutes and the light will stop flashing and come one solid. Then try to start the car. Turn the key to the off position. Wait 60 seconds and then turn the key to the on position. See if the light is still flashing. If it is then try the process again. If it isn't flashing and it is on solid then start your car.

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Check the dash once you turn the key to the run position the passlock runs a security check using a set resistance value through the chip in the key. If the security light begins to flash the reading it received was incorrect or it didn't get a reading at all. You can try reseting the value it is looking for by turning the key to start then releasing it. After 10 minutes turn it off then cycle it start again leaving it in on for 10 minutes then back to off then one more time. After the third cycle has completed for a total of 30 minutes. You should be able to turn the key on and start the vehicle. If the light continues to flash their is a problem with the chip in the key or the connections within the ignition its self. Both are common but a Pass Lock Relearn as described above will usually adapt to the poor connection values. Hope this helps.

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Try this:

FIRST try a different key if you have more than one for the vehicle. I have had cars towed into my shop simply because someone was trying to use a cheap duplicate key that was cut at the hardware store. These keys are fine for the doors and trunk. They are great to have around in case you lock your keys in your car. However, they do not have the electronics built into them to allow for engine starting.

If you are using the correct key and a second key also does not work. then...
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3. Turn the ignition to the START position for about one second. Then release the key to the RUN position. DO NOT turn the ignition OFF.
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HINT: you may want to try this a couple times to make sure you are doing it correctly before towing.

If it does start, it is recommended that you have your security system checked for fault codes. I have seen this many times, and it only gets worse and does it more often until this method no longer works to get it started.

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