How to reset PassLock reset system on Chevy?

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.

What’s the name of the security system on a Chevy?

[1] Well, Passlock should be called the Great Immobilizer because not only does it stop thieves with no keys, it also stops owners with the right keys. GM introduced many security systems – VATS, Passkey, Passlock, but if your GM has a key without a chip in it, chances are it’s passlock.

What to do if your car won’t start at PassLock?

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. A temporary fix is to leave your key in the ignition, at the “auxiliary” position for about 10-15 minutes until the security light shuts off.

How do I Turn Off the PassLock security light?

How to permanently disable and remove GM security systems?

GM Security Systems are killing cars all over North America and the only final solution is to disable and remove them permanently. This is what NEWROCKIES Inc is all about.

How do I Reset my PassLock security system?

If it starts and runs normally, the relearn is complete. If you need to program additional keys, 12. Turn the key to OFF. 13. Insert the next key. Turn it to ON within 10 seconds of removing the previously used key. 14. Wait for the SECURITY light to turn off. That may happen quickly.

Can you reset the computer on a 2005 Chevy?

You can reset the computer on your 2005 Chevy right from your home garage, saving yourself time and money. Warning lights illuminate on the Chevy’s instrument panel to keep you informed of the status of the various systems in the vehicle. They also tell you when the vehicle needs servicing.

How to reset an automotive security system [ video ]?

Disconnect the battery using the negative cable wait one minute and reconnect. Call to the dealer, the service writer got us one of their technicians to help us and this was his response: unlock the vehicle with the key fob twice to recognize the key is valid. Push the panic button twice to disable the alarm. Roll the windows up and lock the car.

Can You disable the PassLock on a GM car?

The following instructions will allow you to disable the PassLock security in quite a few GM Vehicles. •This will allow you to install a remote starter and not have to purchase a bypass. •Avoid Costly repairs for an already broken PassLock System.

How long does it take for PassLock sensor to turn off?

•Observe the security light located in the instrument cluster, after approximately 10 minutes the security light will turn OFF. Turn OFF the ignition, and wait 5 seconds. •The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.

How long does it take to reset PassLock on a Chevy?

Reset security system on chevy, buick, oldsmobile, cadillac, pontiac, saturn, hummer. Make sure the battery if fully charged because this procedure may take up to 30 minutes and you cannot start the vehicle during this time. The instrument panel cluster (IPC).

How to permanently disable GM PassLock system Hilux Motors?

5.Take your digital ohm meter and put your negative probe on the black wire that you stripped back earlier. Put the positive probe on the yellow end of the wire that leads BACK to the ignition. Use alligator clips here to help the probes grab the wires. 6.With the probes hooked up turn the ignition to the run position.

Is there a way to bypass PassLock on a Chevy?

NewRockies.com has a solution for how to fully bypass the PassLock system in GM cars. This problem has popped up in the following Chevrolet generations. Most years within a generation share the same parts and manufacturing process. You can also expect them to share the same problems.

How do you reset the ECM on a Chevy truck?

Returning the ECM to its factory state may be necessary to troubleshoot or resolve a number of problems. Remove the nut from the negative battery cable using a socket set or wrench. Slide the cable off of the battery and set it aside. Turn the headlight switch to the “On” position to drain the ECM of any remaining power.

How can I reset the GM ABS brake module?

Navigate to the “ABS” menu on the computerized scan tool by pushing the down arrow button. Select “Clear all codes.” Power off the computerized scan tool and disconnect it from the DLC connector. Turn on the vehicle and verify that the ABS module is no longer lit. A computerized scan tool can be purchased online, or at any automotive supply store.

How do I reset Transmission Control Module Chevy Silverado?

I have a 2001 Silverado. To reset my TCM I turn on the key to the on position press the gas pedal to the floor for 10 seconds and then turn the key off then release the gas pedal and wait about 5 minutes to restart the engine. I have a 1999 Chevy 1500 I rebuilt the transmission so when I put it in drive its like it take off in high gear.

What is the trouble code on a Chevy truck?

When there is a problem, your truck’s check engine light will go on. The trouble codes can be read with an OBD-1 or OBD-2 scanner, depending on the model year of your truck, which will then pinpoint the problem.

Where to reset the ECM on a 92 Chevy truck?

Anyone with basic auto-repair knowledge can reset the ECM on a ’92 Chevy truck. Climb into the truck’s driver seat. Plug the scan tool’s data cable into the truck’s diagnostic port, which is located under the dashboard next to the steering column.

How does the PassLock work on a General Motors car?

Note: The theft deterrent function of the PASSLock System locks out the fuel injectors after the engine is started. However, before a tamper mode engages, the car may run for a few seconds. The engine will then stall. PASSLock was developed for the General Motors 10-cut lock mechanism.

Where is the plug on a Chevrolet PassLock?

Step Two: Locate the plug pictured below, The plug is under the dash near the steering column. Open your driver door and stick your head on the floor near the gas and brake pedal and look up, it will be the big white plug staring you in the face.

What happens if there is no PassLock on the engine?

No Passlock problem will prevent the engine from cranking. If, when cranking the engine, the security light is flashing, that indicates a PassLock problem. The engine may initially start and run until the BCM gets the message to the ECM to deactivate the injectors.

How to correctly fix the Chevy Colorado PassLock issue?

Passlock issue. How to correctly fix it? | Chevrolet Colorado & GMC Canyon Forum Passlock issue. How to correctly fix it? … My truck just started to exhibit the common PassLock symptoms. Cranks and cranks but no start with the security red light flashing on the dash. It did this to me Monday and almost made me late for work.

Where is the PassLock switch on a Chevy?

The switch allows the car’s passlock system to be switched on or off by splicing with a yellow wire that’s plugged into the cylinder lock. Once completed, the new switch should be placed underneath the dash right below the key hole.

Which is the best version of the Chevy Blazer?

With three bold personalities to choose from, there’s sure to be a Blazer that’s a match for you and your life. Add some bold accents to your Blazer with the Sport Edition or go all-in on all-black with the Midnight Edition. Whichever you choose, you’re sure to be the center of attention.

What kind of infotainment system does a Chevy Blazer have?

Chevrolet Infotainment System functionality varies by model. Full functionality requires compatible Bluetooth and smartphone, and USB connectivity for some devices. Map Coverage available in the United States, Puerto Rico and Canada. Read the vehicle Owner’s Manual for important feature limitations and information.

When does all wheel drive come out for Chevy Blazer?

Late 2020 model year availability. All-wheel drive is available on all Blazer 3.6L and 2.0L models and gives you added confidence in a variety of conditions. Additionally, RS and Premier models offer an available Advanced Twin-Clutch system that helps further driver control by independently directing torque to the wheel with the best traction.

What to do if your security system breaks on a GM car?

On older GM cars two small wires will break near the tumbler which will activate the system. In this case the tumbler must be repaired or replaced. Call to the dealer, this is their response: Hold the panic button on the key fob for 2 seconds. Close all of the doors and while using the key lock and use the key to unlock the lock the driver’s door.

What to do when your security light won’t start?

1. Turn ON the ignition, with the engine OFF. 2. Attempt to start the engine, then release the key to ON, vehicle will not start. 3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF. 4. Turn OFF the ignition, and wait 5 seconds. 5.

Where do I find the trouble code on my Chevy?

These are listed in numerical order for easy searching. When retrieving Chevy trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.

How to reset the computer on a 97 Chevy?

How to Reset the Computer on a 97 Chevy. Turn the ignition to the “on” position (the second position on the ignition). Pull the fuse for the ECU out of the fuse panel using fuse pullers in the fuse box. Wait five minutes and reinsert the fuse. Wait for the check engine light to go out. The ECU will be reset.

What is the oxygen sensor code for a Chevy?

P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Trouble Code P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Check Engine Light Code

How do you reset the PassLock system on a 1999 Chevy Cavalier?

The passlock reset procedure is listed below. 30 Minute Re-Learn Procedure. 1. Turn ON the ignition, with the engine OFF. 2. Observe the Security light, after approximately 10 minutes the light will turn off. 3. Turn OFF the ignition, and wait 5 seconds.

How to disable the security system on a Chevy Cavalier?

You’ll have to contact the dealer to find out the security code or have them tell you how to disable your cars security system. The only other way to do it would be to disconnect the battery but if you’ve already tried that then nothing else will work other than have the code. 67 people found this helpful.

When does the security light come on on a Chevy Cavalier?

The security light usually comes on with all the the lights and just like all the lights it will go off within 10 seconds as long as no error is seen.

How do I deactivate the security system on my car?

Then hit the unlock button on the fob twice this should deactivate the security system which should be accompanied by exterior lights flashing or an audible horn beep. Each of these steps should be followed by the cancellation of the security light.

Can a GM security system be moved to another car?

Newrockies inc proudly manufactures its modules with top quality electronic components. No more risks of remaining on the road. Universal. The same module works with over 100 different GM and Isuzu cars – you can even move it on your next car! Trusted.

When does anti theft system lock the steering wheel?

Sometimes, the anti-theft system locks the steering wheel and does not let the key turn inside the slot. This annoying problem is mostly exclusive to Hondas. It mainly happens when you move the steering wheel after turning off the car. It locks the wheel in that position and does not let you move it next time you try to switch on the car.

What to do after Idle Relearn on Chevy?

Blue Streak Electronics recommends to warm the engine after the idle relearn procedure, without use of the air conditioner. After the engine is warm, switch the air conditioning on and off, and then put the transmission into the “drive” position. These actions complete the full idle relearn procedure.

What do I need to Reset my Chevy Silverado computer?

While doing the process of rebooting the computer, you will need the OBD II car code reader. For noting down the code, you may need a pen and a piece of paper. While buying and resetting your Chevy Silverado’s computer, there are chances that so many questions come into your mind.

How to reset your Chevy or GMC oil change light?

Here’s the easy way to reset the oil light on your Chevy or GMC. Oil lights have been a standard feature on Chevy and GMCs for years. Newer Chevys will have a built in Vehicle Information Center (VIC), but older models don’t. If your GMC is 2006 or newer, it comes with the GM Oil Life System.

Why is my Chevy TheftLock not turning on?

This security code keeps someone from using the radio in another vehicle if the unique security code is not entered. The radio display will read “LOC” and the device will not turn on. Whenever your Chevy battery is disconnected or the battery dies, the Delco Theftlock radio enters the “LOC” mode.

How to turn on security light without starting engine?

Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “OFF” position.

What do you need to know about GM security module?

Connect a battery charger to the battery to ensure power is available while programming. Both the IPC/BCM and PCM must be working and communicating with each other. Observe the “SECURITY” indicator After 10 minutes the “SECURITY” indicator light will turn off.

Why is the security light blinking on my Blazer?

I had the same problem 2 years ago with my 2000 Blazer. I went through hell trying to figure out the problem with many mechanics. If the security light is blinking you have to wait 10-15 minutes for the system to recycle. When the light stops blinking it will start.

What happens when the GM security light stops blinking?

If the security light is blinking you have to wait 10-15 minutes for the system to recycle. When the light stops blinking it will start. Here’s the issue…the GM security feature is defective and there is no way to turn it off.

When to set a code on a car?

The system will only set a code if the problem is a hard failure, or repeats itself. Regarding temperature, if the temps are higher outside, the temps are higher around all those sensors used in the engine control system.

What is the yellow light on a GM starter interrupt?

In this article, we are concentrating on factory-installed GM starter interrupt systems. This type of anti-theft system is designed to prevent the vehicle from starting unless the correct ignition key is used. These systems used a dash-mounted “security” or “theft” light which can be yellow or red in color.

Is there a passkey 3 security system bypass?

PASSKEY 3/SECURITY SYSTEM BYPASS! No start issue? CHEVY/GMC 1500,2500,3500 – YouTube PASSKEY 3/SECURITY SYSTEM BYPASS! No start issue?

Can you bypass Passkey 3 on a GMC 1500?

CHEVY/GMC 1500,2500,3500 – YouTube PASSKEY 3/SECURITY SYSTEM BYPASS! No start issue? CHEVY/GMC 1500,2500,3500 If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

How does a GM passkey and PassLock work?

If you see 2.5 volts and the vehicle still won’t stay running, check the fuel pump relay. Here’s how it works, The lock cylinder reads the resistance of the pellet in the key and transmits that data to the theft module. Meanwhile, the PCM provides 5 volts on the dark blue wire.

What was the year of the Chevy Venture?

PASSKEY 3/SECURITY SYSTEM BYPASS! No start issue? CHEVY/GMC 1500,2500,3500 – YouTube PASSKEY 3/SECURITY SYSTEM BYPASS! No start issue?

How does the PassLock work on a 1998 Chevy truck?

Most ’98 Chevy trucks came equipped with a General Motors passlock security feature that cuts the fuel supply to the engine if a key that’s incompatible with the system is inserted into the ignition. Once the theft-deterrent security feature has been activated on your ’98 Chevy truck, you will have to reset the passlock to start the engine.

How to reset the security system on a Chevy Silverado?

A Chevy Silverado that has had its Passlock security system enabled will shut down the fuel injectors on the vehicle and will not allow the vehicle to start. Resetting the system may be as simple as using the vehicle key.

Is there a way to bypass GM security system?

Scouts Troop 980 of Utah cheers as their ’92 Olds Toronado is coming back to life. Thanks to the NEWROCKIES Full Bypass Module! How to FULLY bypass VATS Passkey and Passlock Security Systems in GM Cars. Has the dreaded GM Security system just hit you?

How long does it take for security light to turn off?

After 10 to 15 minutes the security light should turn off. Turn the ignition off and wait 5 seconds. Repeat steps 1 through 4 two more times for a total of 3 cycles (30 minutes). The car is now ready to relearn the Passlock sensor data code (or password) the next time the ignition key is turned from off to crank.

How does the PassLock system on a 2000 Chevy Silverado work?

by David Clair. The 2000 Chevrolet Silverado is equipped with the General Motors Passlock theft-deterrent security system. The system disables fuel to the ignition if a valid key is not used when attempting to start the engine. If the Passlock system is activated, the Silverado will not be able to be started until the system is reset.

Is there a way to bypass PassLock 2?

The easiest way to bypass the Passlock 2 system is to place a resistor between the passlock sensing wire and the ground reference wire. To find these wires, look for three wires that at some point are wrapped together, coming from the ignition barrel. Usually, they are orange/black, red/white, and black.

How long does it take to reset PassLock system?

This will take approximately 10 to 15 minutes. Start the car immediately once the “Theft Sys” light stays on steadily. Remember to not turn the key off. Your car will now reset the passlock system and start as usual.

Why is my PassLock not working on my GM car?

However, it isn’t uncommon for GM car owners to experience glitches with their passlock system when trying to start their vehicle. When this occurs, you will see the security (Theft Sys) light being displayed randomly, plus you won’t be able to start your vehicle.

What to do if your Chevy truck won’t start?

If the security feature was activated, you should not be able to start the truck. Turn the key back to the “Run” position. The security light will start to flash off and on. Keep the key in the “Run” position until the security light stops flashing. This usually takes 10 to 15 minutes. Do not remove the key.

Is there a security light on a Chevy Suburban 1500?

I have a 1999 chevy suburban 1500 and it was doing the whole cut off the fuel trick. The trick to it is when you put the key in only turn on to auxilary lights on the dash, the security light should be on but NOT blinking. Should start up with no problem.

How to program a GM / Chevy coded / anti theft key?

HOW TO PROGRAM A GM/CHEVY CODED/ANTI THEFT KEY FOR FREE! SAVE MONEY!!! – YouTube HOW TO PROGRAM A GM/CHEVY CODED/ANTI THEFT KEY FOR FREE! SAVE MONEY!!! If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

How to program a keyless entry for a 1998 corvette?

How to Program a Keyless Entry for a 1998 Corvette. Push and hold the “Reset” button for 2 seconds. Push the “Reset” button when you see “FOB Training” in the DIC. You’ll then see “LK + UNLK 1st FOB” displayed. Push and hold the “Lock” and “Unlock” buttons on the remote at the same time. Hold them for about 15 seconds.

What to do when your car key wont work?

It works mostly in models of Volkswagen, Mercedes-Benz, and BMW and is applicable even when the key fob is damaged or has a dead battery. In case if you are driving a Honda Accord, the trick needs a bit of modification. After inserting the key into the driver’s door lock, turn the key to unlock, lock and then lock position again.

How do you reset the PassLock on a 1998 Chevy truck?

Turn your key clockwise to crank the ignition. Wait for your truck to start, which confirms that you have successfully reset the passlock on your ’98 Chevy truck. Based in Chicago, Kenyonda Bradley has been writing for online publications since 2008.

What should I do if my car alarm wont turn on?

If it’s no longer blinking, turn the key back to the Off position and allow it to set for a minute or two. This gives the system time to reset or you won’t be able to start your car. Step 4: Start the engine. Attempt to start your engine. If it still won’t start, check to make sure the battery hasn’t been drained. Step 5: Repeat the process.

How to solve the anti theft system car wont start?

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. Reconnect it and make sure that both the anode and cathode terminals are tightly attached. It will reset the computer system and your car is likely to kick off.

What should I do if my car alarm keeps going off?

If the alarm starts going off randomly, then the first thing you should do is switch the battery in your remote. You will then have to wait a few days and see if that fixes the problem. If it does, then you are good to go, but if it doesn’t, then you will have to investigate farther.

Why does a car have a PassLock system?

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. 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.

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.

When did the Chevrolet PassLock system come out?

One of Chevrolet’s solutions for stopping thieves from driving away with a car is, coincidently, doing the same thing to the actual owner. Passlock is an immobilizer introduced by GM in many mid-to-late 1990’s vehicles.

Why are there passlocks on all GM cars?

One of the more common “blotches” that is annoying, but easy to patch-up, is General Motor’s anti-theft passlock security systems. These security systems were incorporated into many of their models, including the ’97-03 N-bodies, to keep GM cars from being stolen.

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.

Why did General Motors start the PassLock system?

Aug 1st, 2005 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. PASSLock increased the level of security while retaining the ease of service and costs offered by standard ignition lock systems.

How to deactivate a PassLock on a 2002 Chevy Silverado?

Turn off the ignition and remove the key if the key is already in the truck. Open the Chevrolet door and wait until the Security light stops flashing. This light informs you that someone has recently tried to start the engine without the right key.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

How do you unlock the radio on a Chevy?

How to Unlock a Chevy Radio Step 1: Start the vehicle and turn on the radio. Step 2: Press and hold preset numbers 2 and 3 until a three digit code appears on the radio display. Step 3: Press the AM/FM button. Step 4: Call the Chevy Radio Code phone line at 1-800-537-5140.

Why is the security light on on my Chevy Malibu?

1997 – 2003 Chevrolet Malibu 1999 – 2004 Pontiac Grand Am The problem is usually caused by the Security Module, which is part of the Ignition Lock Module. Your owner’s manual gives you the following advise “After attempting to start the engine, if the SECURITY light flashes or stays on, wait ten minutes with the key in ON until the light goes off.

Why does my Pontiac Grand Am security light keep coming on?

1999 – 2004 Pontiac Grand Am The problem is usually caused by the Security Module, which is part of the Ignition Lock Module. Your owner’s manual gives you the following advise “After attempting to start the engine, if the SECURITY light flashes or stays on, wait ten minutes with the key in ON until the light goes off.

What should I do if my Toyota Corolla security light goes off?

The ten-minute procedure involves trying to start the engine. If nothing happens or the engine starts and dies, the security light will be flashing. Wait ten minutes. The flashing light should go off or illuminate without flashing. When it does, turn the ignition off, wait twenty seconds, and then try to start the engine.

Is it normal for the security light to go off when the engine is running?

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. Depending on the system, replacement of key components will necessitate that a relearn procedure be completed.

How to reset the PassLock system on GM cars?

Start the car immediately once the “Theft Sys” light stays on steadily. Remember to not turn the key off. Your car will now reset the passlock system and start as usual. If your passlock system keeps giving your problems, it may be broken and you will need to take it to the dealership.

How to reset the PassLock system on a 2000 Silverado?

If the Passlock system identifies the key as unauthorized, the engine stalls. Leave the ignition switch in the “Run” position as the “Security” light blinks on and off for approximately 10 minutes. Turn the ignition switch clockwise to start the engine immediately after the “Security” light stops flashing.

How do I Turn Off the PassLock sensor?

•The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK. The vehicle learns the Passlock Sensor Data Code and/or resistance on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

How do you reset the computer on a GMC?

This scan tool can be purchased from most auto parts stores and is required to reset the vehicle’s computer. Open the door on your GMC vehicle and locate the port to the left of the fuse panel. Plug the electrical connector from the OBD scan tool into the OBD port. Turn the ignition key to the “II” position.

How to reset the oil soon light on a 2001 Chevrolet?

Push and release the accelerator pedal fully three times within five seconds while monitoring the dashboard lights. Verify the behavior of the change oil soon light. If the change oil soon light flashes two times, the system is reset. If the change oil soon light comes on and remains lit for five seconds, the system has not reset.

What to do if your GMC Truck wont start?

No relearn is necessary. In this situation, the vehicle will start and run with no problem. If the vehicle won’t start, check your scan tool for a VTD (Vehicle Theft Deterrent) Fail-Enable Mode trouble code, or if the security light on the dash is illuminated.

How to reset the PassLock 3 security system?

Turn the key to ON but do not start the engine. The SECURITY light will turn on and stay on. 3. Wait 10 minutes or until the SECURITY light to turn off. 4. Turn the key to OFF for 5 seconds. 5. Turn the key to ON but do not start the engine. The SECURITY light will turn on and stay on. 6. Wait 10 minutes or until the SECURITY light to turn off. 7.

How long does it take to erase a PassLock key?

If you’re adding a new key to the system, you MUST have all the older keys with you. All previously learned keys will be erased from the system as soon as you program the first key. After the first key has been relearned, immediately insert the next key to be programmed within 10 seconds.

What is the name of the PassLock module?

PASSLOCK MODULES HAVE MANY NAMES INCLUDING ANTI-THEFT MODULE, VATS MODULE, AND PASSLOCK, BUT THEY ALL REFER TO THE SAME PART. THIS COMPONENT’S JOB IS TO TELL THE ELECTRONIC ENGINE CONTROL MODULE (ECM) THAT THE CORRECT KEY IS BEING USED TO START THE VEHICLE.

How to reset PassLock reset system on Chevy?