How does the PassLock system work on a GM car?
A wide variety of GM cars come with a passlock theft system feature that is meant to keep GM cars from being stolen. 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)…
How to bypass vats, Passkey and PassLock security systems in GM?
It can be VATS, Passkey or Passlock anti theft system that is going bad causing your issue. I am going to share a secrete with you on how you can bypass these systems with very little effort. This is a really unique security system bypass kit that you can use to override your current factory theft system on your GM vehicle.
How to do a Relearn on a PassLock system?
To perform a relearn on a Passlock system, make sure there is a fully charged battery in the vehicle. The battery will be used for 30 minutes without the alternator available for charging. Connect a battery charger to the battery to ensure power is available while programming.
How often does a GM PassLock light flash?
You need a scan tool. If the signal is not correct, the PCM disables the injector and the starter and flashes the light once per second. If an illegitimate key is used or a system problem exists, the light flashes twice per second. This system allows starter operation, then kills the injectors 1-2 seconds after startup.
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.
Is the GM PassLock anti theft system still in use?
The Passlock family of anti-theft systems are still in use today. 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.
To perform a relearn on a Passlock system, make sure there is a fully charged battery in the vehicle. The battery will be used for 30 minutes without the alternator available for charging. Connect a battery charger to the battery to ensure power is available while programming.
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.