What is the system fault code for PassLock security?

When the sensor defect starts, it usually presents itself as system fault code B2960. A red (or yellow) “security” warning light will stay illuminated and the engine will either a) never start or b) start for a moment and then shut down.

Is there a problem with the PassLock sensor?

The short answer is there’s a problem with the sensor. Some have suggested that the pins in the system are “tin” plated and subject to oxidization over time. Others say their system is possessed by the devil and in need of an exorcist.

How do I Turn Off the PassLock security light?

1. Turn the key to ON and attempt to start the engine and release the key to the ON position. 2. The SECURITY light will illuminate. Wait 10 minutes until it turns off. 3. Turn the key to OFF for 10 seconds. 4. Turn the key to ON and attempt to start the engine. If it starts and run, the system has reset.

How to permanently disable GM pass lock system?

•Disable Pass Lock system to prevent from being stranded in the future. This tutorial varies depending if the ignition is located: If your ignition is located in the dash then you will be removing the panels on the passenger underside (toe board) of the dash.

What happens if the PassLock security light is not read?

If the incorrect code is read, the system will not allow the engine to start for four minutes—even if the correct code is received. The security light will remain on or a message will be displayed on the Driver Information Center (depending on the model) when this occurs. Both of these starter interrupt systems are very effective on their own.

How can I bypass the PassLock security system?

When you bypass the passlock system you’re basically taking the lock cylinder case sensor out of the picture. You do this by inserting a resistor into the circuit that duplicates the voltage drop that would normally be caused by the lock cylinder case sensor.

What to do if your GM PassLock is locked?

This is to turn on the PassLock security system to see if it is locked. Unlocking itself is not difficult but the process has to be allowed some time to reset itself to the default mode.

What to do if your PassLock sensor won’t work?

Best way to fix is to permanently disable/disconnect passlock system. Not fixed, security light comes on solid and goes away in different time intervals while driving, then after a couple of starts it goes in that limp mode where the security light blinks.

What happens when you bypass the PassLock system?

The BCM has been programmed to expect a certain voltage. If it receives the expected voltage, it sends a start signal to the PCM. When you bypass the passlock system you’re basically taking the lock cylinder case sensor out of the picture.

Why does my PassLock security light keep going off?

After turning the ignition off for the third time and waiting for twenty seconds, the engine should start and run. If it doesn’t, there may still be something wrong with the system. After the learn procedure is completed and the engine is running, the security light may stay on steady for a few minutes and then go off—this is normal.

Why does my PassLock not work on my car?

The following information can help to determine the cause of the problem. The PASSLock system does not disable the starter; it only disables the fuel after the engine has started. If the vehicle will not crank, PASSLock cannot cause this condition. If the vehicle starts, but stalls quickly, this condition can possibly be related to PASSLock.

When did the first PassLock system come out?

If a fault occurs while driving, the engine may or may not start after turning the ignition off. If a fault occurs when trying to start the vehicle, it probably won’t start. In the mid 1990s, the first Passlock systems were introduced and are still used to this day.

How long does it take to relearn the PassLock system?

The Passlock family has two basic relearn procedures – a ten-minute procedure and a thirty-minute procedure – and which one you use depends on the system and what components have been replaced. Try to start the engine. It should crank but not start, and the security light will be flashing.