What is PassLock on GM cars

The PassLock system was designed to prevent vehicle theft by disabling fuel to the engine if attempts are made to start the vehicle without the correct bitted key. … No programming is required for the PASSLock-equipped vehicle to accept additional keys.

Can you disable passlock?

The Passlock system on a Vehicles is the anti-theft system. The Passlock system uses a recognition transponder in the ignition tumbler and a computer chip in the ignition key. … While you cannot remove the Passlock system, you can disable it by tricking it into thinking the Vehicles had a malfunction.

What triggers passlock?

Passlock uses a coded lock cylinder that essentially stops the engine from running until the proper key is detected. When the key is inserted into the ignition, a magnet on the cylinder creates a signal to the ECM (engine control module) that essentially says everything is ok to start and run.

How do I reset my GM passlock?

1. Insert your key in the starter, start you car as you usually would and let it stall. Keep the key in the “On” position. …
2. Wait until the “Theft Sys” light on your dashboard stays on without blinking. This will take approximately 10 to 15 minutes.

What is passlock shutdown?

Passlock works to prevent vehicle theft by shutting of the fuel injectors if a thief tries to remove the lock cylinder from the vehicle. Removing the lock cylinder with a slide hammer is a very common theft technique.

How does GM PassLock system work?

The PassLock system works when the lock cylinder moves a magnet past a Hall effect sensor. The sensor then sends a signal to the control, which GM has moved several times over the model years. The control then sends the code to the PCM. If the code is correct, the PCM will allow the car to start and run.

How do I permanently disable GM PassLock?

1. Leave the ignition key turned to the “On” position after the vehicle has stalled and will not start.
2. Look at the dashboard and locate the theft system light. …
3. Turn the ignition to the “Off” position to disable the PassLock system, and wait for 20 seconds for the system to reset.

How do I know if my PASSLock is activated?

Most PASSLock-equipped vehicles have a telltale indicator in the instrument panel. When a PASSLock-equipped vehicle is being started, the instrument panel warning light for PASSLock remains on until the engine starts.

Does PASSLock disable fuel pump?

Yes, the fuel pump should still run even if there is a passlock issue. The fuel pump fuse is fuse 48 and is a 15 amp fuse, so you can check to see if there is power there if you have a multimeter.

Where is the PASSLock module located?

There is only one PassLock system. There is no sensor in the ignition lock cylinder, the Passlock sensor is in the ignition lock cylinder housing, and there is a magnet in the ignition lock cylinder.

Article first time published on

How can I bypass pass theft deterrent system?

Hold the key for 30 seconds in the position. That will tell the system you have the right key, and it will enable you to be able to bypass the car’s alarm system. There are some cars that will recognize the key by just turning back and forth on the key inside of the door’s lock key cylinder.

How do I get my Chevy out of security mode?

How do you reset the Chevy Silverado’s anti-theft system? Insert the ignition key, put it in the on position, attempt to start the engine. With the key in that position, wait ten minutes. The security light will blink and go out.

How do you remove an ignition lock cylinder without a Saturn key?

Take your screwdriver and insert it into the ignition lock cylinder. Turn it as far round in a clockwise direction that you can. Then pull the paperclip to the right as much as you can. You should then be able to slide the switch out easily.

Will disconnecting battery reset anti theft?

It is another way to solve the problem of anti theft system car wont start. Disconnect the positive terminal of the battery for a minute or two. … It will reset the computer system and your car is likely to kick off.

What is pass lock sensor?

The Passlock sensor monitors the position of the lock cylinder and relays an analog Passlock signal to the body control module (BCM). The BCM determines the validity of the Passlock signal, then sends a password to the powertrain control module (PCM). … The Passlock sensor contains two Hall effect sensors.

How do you bypass the anti theft system on GM passlock 2?

PASSLOCK-II bypass procedure 1: Locate two wires, which are THIN and are in the main ignition harness.. Orange/Black (or Black) and Yellow. 2: Cut the Yellow wire, and strip back some of the insulation from the Orange/Black (Or Black) wires. 3: Turn the ignition to the “Run” position ( don’t crank the starter).

How do you relearn a key in GM?

Relearn procedure: Insert ignition key and turn to the ON position. Do not attempt to start the engine. Leave the key in the ON position for approximately 11 minutes. The security light will be on or flashing for the 11-minute period.

What is ignition disable on a car?

An ignition disabling anti-theft device (16) for a motor vehicle in which circuit switching devices (18 and 20) are used to disable the ignition system (6) of a vehicle every time the vehicle engine is shut off.

What is theft deterrent system GMC Sierra?

Current automobiles use a theft-deterrent alarm system to prevent break-ins. The horn will sound while the headlights flash on and off. This will continue for several minutes unless you deactivate the alarm. After deactivating it, you can reset the alarm to ensure that your GM vehicle security system is set correctly.

What year did GM start using vats?

VATS (Vehicle Anti Theft System) was introduced by GM on the 1986 Corvette because the Corvette had become the number one target of car thieves. Corvette thefts dropped so impressively after VATS was implemented that GM expanded the system in 1988 to the Camaro, Firebird, and Cadillac Seville.

How do you turn off anti theft system on a Chevy Cobalt?

To reset the 2009 Chevy Cobalt anti-theft system, You start by turning the on-position ignition key and waiting for about 10 minutes until the blinking anti-theft system goes off. Switch off the key and go back to the vehicle to start the car to see if it has been reset.

Does anti-theft light drain battery?

Yes it will drain your battery but should take so long its not a problem.

Why does the theft light flash?

The Anti-theft Light in the dash of your car should flash periodically to show that the system is engaged and active. You have to lock the doors of the car (without it running) for the alarm to engage.

Why is the security light on?

On your particular vehicle the security light staying on as the vehicle is running is an indication that the security system has failed and is disabled. It is common for a security light to come on after battery dies because the computer may lose its programming to the key.

How do you reset the anti theft on a Saturn Ion?

To reset the system, get in the car and shut the door. Turn the key on to the “Run” position without cranking the engine. Leave the key there for exactly 10 minutes. Turn the key to the off position without removing it and back to “Run” for 10 more minutes.

How do you bypass the security on a 99 Tahoe?

1. Unlock the Tahoe driver’s door and insert the key into the car’s ignition.
2. Turn the key to the “Run” position. …
3. Leave the ignition key in the “Run” position for 90 seconds, or until the security light stops flashing again.

Is there a fuse for anti-theft system?

It is usually located on the dashboard by the driver’s door, in front of your left knee. You may find the alarm fuse in this fuse box. If you do not find an alarm fuse inside of the car, look in the fuse box under the hood on the driver’s side. Your car model may or may not have additional fuse boxes.

How do I turn off anti-theft on my GMC Sierra?

1. Open the door.
2. Lock the door with the Remote Keyless Entry (RKE) transmitter. The security light should flash. …
3. Close all doors. The security light will stop flashing and go off after approximately 30 seconds.

How do I permanently disable my car alarm?

If you’re wondering can you disable a car alarm permanently, the answer is yes, of course. There are simple instructions if you want to know how to disarm a car alarm completely. You should just unlock the door, start the car, remove the fuse, or detach the car battery.

How do you reset the anti-theft system on a 2014 Chevy Silverado?

To reset the anti-theft system in the 2014 Chevy Silverado, turn the key in the ignition to the “on” position and attempt to fire the engine. Return to the “on” position. The vehicle will not start if anti-theft has disabled the ignition. After 10 minutes, the flashing “security” warning light should power off.

How do you remove a GM ignition lock cylinder?

Set the screws aside. Lift the turn signal mechanism up slightly to reveal the ignition lock retainer screw. Remove the screw by turning it counterclockwise with a Phillips head screwdriver. Pull the ignition lock cylinder straight out of the steering column.