Permanent GM Passlock & VATS Disabling Service

Stranded by a Flashing Security Light? We Can Disable It for Good.

Are you fighting with a GM vehicle that won't start? If you're seeing a "SECURITY" or "PASSLOCK" light on the dash, you're likely dealing with a failure in the GM Vehicle Anti-Theft System (VATS) or Passlock system.

These systems were designed to prevent theft, but as vehicles age, their components (like ignition lock cylinders, key pellets, or sensors) begin to fail. This failure tricks the vehicle's computer (PCM or BCM) into thinking the car is being stolen, triggering a "no-start" condition—leaving you stranded.

Symptoms of a Failing Passlock or VATS System

You may have this problem if you're experiencing any of the following:

• The engine starts but stalls immediately.

• The engine doesn't crank or turn over at all.

• The "SECURITY" light is flashing or stays on.

• You have to wait 10-12 minutes before the car will let you try again (this is the "relearn" procedure).

The Temporary "Fix" (And Why It's Not Enough)

You may have found the temporary "10-minute relearn" procedure, which typically involves these steps:

1. Attempt to start the vehicle.

2. When it fails to start, leave the key in the "ON" (or "RUN") position.

3. Wait 10-12 minutes until the "SECURITY" light stops flashing and turns off.

4. Turn the key "OFF" for 45 seconds.

5. Attempt to start the vehicle.

While this might get your car started this time, it is not a fix. The underlying hardware is still failing, and the problem will happen again. It's only a matter of time before you're stranded for good.

The Permanent Solution: Auto Computer Performance

Don't replace expensive parts or get stuck in a "relearn" loop. The only 100% guaranteed way to solve this problem forever is to electronically disable the system within the vehicle's software.

That's where we come in.

At Auto Computer Performance, we are experts in Powertrain Control Modules (PCMs). We can reprogram your vehicle's existing PCM to completely and permanently ignore the faulty Passlock or VATS signal.

How our service works:

1. Contact Us: Get in touch with us to confirm your vehicle's details.

2. Mail Your PCM: You send us your vehicle's PCM (engine computer).

3. We Reprogram: Our technicians perform the software service, permanently disabling the anti-theft protocol.

4. We Ship It Back: We mail your PCM back to you, ready to be re-installed.

Once you plug the reprogrammed computer back into your vehicle, your no-start problem will be gone for good. The vehicle will no longer look for the anti-theft signal and will start every time, just like a vehicle that never had the system in the first place.

Don't Get Stranded Again

Stop worrying about whether your car will start. Let the experts at Auto Computer Performance provide a permanent, one-time fix.