Security Light/PassKey III Issues


Reynard
03-25-2011, 07:06 PM
Having an issue with my 2002 GP GT. I started it, but then it died after a couple of seconds while the "Security" light was flashing.

I actually had both original keys with and tried each to no avail (same thing: starts, but engine kills after a few seconds). I checked the PassKey III fuse and even replaced it - still no luck.

Called two different dealer service departments and they suggested turning the key to the "ON" position and leaving it for 15 minutes. I tried this 3 times and still the same issue.

I understand this can be a VERY expensive repair as I've read it requires replacing the ignition module and perhaps the Theft Deterrent Module. Guess I'm just looking for any advice anyone may have to at least temporarily by-pass or reset the system so I don't have to get it towed (of course it's no where near my place).

Anyone had this done recently? What were the costs and does anyone know if this has to be dealer fixed or if another shop could handle it?

I'm not very mechanically inclined in terms of anything electrical, so repairing it myself is out of the question, but anyone's experience with, help, or advice on this would be greatly appreciated.

Thanks!

brcidd
03-25-2011, 07:10 PM
Anyone who installs remote starters can bypass it permanently- because they do it temporarily while car is remote started, just ask them to it permanently.

BNaylor
03-26-2011, 07:39 AM
Try the following procedure which is specifically for GM Passkey 3.


1. Insert a master key (black head) into the ignition switch.

2. Turn to the “On” position without starting the engine. The security light should illuminate and stay on.

3. Wait approximately 10 minutes or until the security light turns off.

4. Turn off the ignition switch and wait 5 seconds.

5. Repeat steps 2 through 4 two more times with the same key.

6. Turn the ignition off. The vehicle will now learn the key transponder information on the next start cycle.

7. Start the vehicle. If vehicle starts and runs normally, and security light is off, the relearn is complete.

If additional keys are to be relearned:
8. Turn the vehicle off.

9. Insert the next key to be learned and turn the ignition switch to the “On” position within 10 seconds of removing the previously used key.

10. Wait for the security light to turn off. It should happen quickly.
You may not even notice the light come on, because it will learn the key transponder immediately.

11. Repeat steps 8 through 10 for any additional keys.

Reynard
03-26-2011, 11:33 AM
Try the following procedure which is specifically for GM Passkey 3.


1. Insert a master key (black head) into the ignition switch.

2. Turn to the “On” position without starting the engine. The security light should illuminate and stay on.

3. Wait approximately 10 minutes or until the security light turns off.

4. Turn off the ignition switch and wait 5 seconds.

5. Repeat steps 2 through 4 two more times with the same key.

6. Turn the ignition off. The vehicle will now learn the key transponder information on the next start cycle.

7. Start the vehicle. If vehicle starts and runs normally, and security light is off, the relearn is complete.

If additional keys are to be relearned:
8. Turn the vehicle off.

9. Insert the next key to be learned and turn the ignition switch to the “On” position within 10 seconds of removing the previously used key.

10. Wait for the security light to turn off. It should happen quickly.
You may not even notice the light come on, because it will learn the key transponder immediately.

11. Repeat steps 8 through 10 for any additional keys.

Thanks.

Will try but when I tried the similar procedure yesterday, the "Security" light was not illuminated steady, but flashing. Not sure if that makes a difference or is indicative or a more serious problem.

Also, I recently began having occasional trouble being able to turn off the ignition and removing the key (about once or twice a week) - could these issues possibily be related?

BNaylor
03-26-2011, 12:29 PM
I'd have to check the FSM to see what the SECURITY light flashing means. Whats interesting is with Passkey 3 enabled there should be no power to the starter in addition to cutting off the pulse width modulation to the fuel injection system. So the engine should not even start.

A bad ignition switch or key cylinder could be relevant to the issue 'cause the transponder signal from the PK3 key head is passed on within the key cylinder along with key present to the BCM module.

Just to double check you are referring to the SECURITY light at the dash instrument panel cluster and not the one on the top of the dash from the content alarm system, if installed.

Reynard
03-26-2011, 01:14 PM
I'd have to check the FSM to see what the SECURITY light flashing means. Whats interesting is with Passkey 3 enabled there should be no power to the starter in addition to cutting off the pulse width modulation to the fuel injection system. So the engine should not even start.

A bad ignition switch or key cylinder could be relevant to the issue 'cause the transponder signal from the PK3 key head is passed on within the key cylinder along with key present to the BCM module.

Just to double check you are referring to the SECURITY light at the dash instrument panel cluster and not the one on the top of the dash from the content alarm system, if installed.

Thanks again for the quick reply!

So I tried your procedure for "relearning" the master keys and it did work.

But to answer your questions, when I would attempt to start, the engine, it would fire, but then shut off 2-3 seconds later with the "Security" light flashing.

The "Security" light I am referring to is indeed the one on the upper right corner of the instrument panel. I do not have any after-market alarm/security/starter system on the car.

When I was going through your steps the "Security" light (on the instrument cluster) was still flashing and did not steady illuminate at all. But the important thing is that it worked as you suggested and was able to "reprogram" both keys and drive the car home and closer to repair options if necessary.

I just wonder if this issue will reappear or if it is related to key lock/ignition issue I mentioned. It happens very sporadically, but the key would always come out if I depressed the button on the gear shift lever and heard a subsequent "click" noise from the area of the steering column.

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