Question about 2000 Cadillac DeVille

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2001 cadillac deville security light won't turn off

I'm a locksmith, I just re-keyrd the ignition lock cylinder, & successfully programed 2 keys, but the security light will not shut off. How do I get it to turn off??

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It should have Turned off with the Insert of the Newly Programmed Key. If Not, It may need a Computer Reset. You Can try Pulling the ECM Fuse for 5 Min. to Reset the Computer. If this does not work, Try disconnecting the Battery and Reconnecting. Make sure that you have a RadioCode before Disconnecting the Battery Though. Please Rate My Response! Thanks!

Posted on Jan 30, 2009

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1 Answer

Ignition lock cylinder removal


Talking about pulling the air bag,removing the clock spring,
special tools for the lock plate,then it gets easy.

Disconnect the batt. for like 20 min to kill the air bag,remove the bag ,then the wheel,(with the puller you rented),the tool to remove the clip for the lock plate come next( also rented from Auto Zone or such like)
The tumbler is held in with a pin that unscrews ,then the cyl. just slides out.

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1 Answer

How to unluck security system of cadilac devlle 2001..my key wont get in to the ignition


Hello: It sounds like the tumblers have come loose in the ignition lock cylinder. You will have to replace the lock cylinder and possibly the key. (if the key is badly worn it could have caused the lock cylinder to fail.) Then you will have to program the system. There is NOT a Way to by pass the pass-key 3 system. Or UNLOCK IT........

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1 Answer

I have a 1989 Allante. Problem getting a key programed/problem starting/problem locking doors. I had several locksmiths go thru All 13 codes with no success. Any way to diconnect the alarm/theft system...


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1 Answer

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1 Answer

How do I program my key for my 2006 Chevy Impala?


Add Duplicate Key (PK3 or PK3+ key)
1. Insert an existing key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing key and, within fifteen seconds, insert the new key
and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming
the key into the vehicle.
Originate New Master Key (PK3 or PK3+ key)

1. Insert new key into ignition cylinder and turn it to the ON (RUN) position.
The security light on the dash will illuminate and stay on for ten minutes.
2. When the security light goes out, you have one minute to start the next
step. Turn the ignition cylinder to OFF and then back to the ON (RUN)
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more minutes.
3. When the security light goes out, you have one minute to start the next
step. Turn the ignition cylinder to OFF and then back on the ON (RUN)
position. The security light on the dash will illuminate and stay on for ten
more minutes.
4. After the security light has gone off the third time, the key has been programmed
into the vehicle’s computer and will operate the car. It has replaced ALL the
previous electronic key codes and is the ONLY key programmed into the
vehicle’s computer.

Add Duplicate Key (PK3 or PK3+ key)

1. Insert an existing key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing key and, within fifteen seconds, insert the new key
and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming
the key into the vehicle.

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2 Answers

2001 Cadillac DTS ignition key won't go in


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