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01 Camaro VATS issue

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Old Jun 5, 2026 | 07:37 PM
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Default 01 Camaro VATS issue

I have a question. I have an 01 Camaro SS. I needed to put a new BCM in it because the old one kept tripping the security system. I put the new one in and started the car one time. I couldn't get the BCM back under the dash, so I disconnected the battery again, stuffed it under the dash, plugged it back in. Now the security light won't go off and the car won't start, it doesn't even try to turn over. I even tried the 30 min BCM relearn and the car still won't start. I have a VATS bypass for the key so I know it's not the ignition. It starts with the old BCM but the security light stays on and I got stranded with it. Any ideas would be greatly appreciated.
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Old Jun 11, 2026 | 09:25 AM
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There is no such thing as a 30 minute BCM relearn - at least not on 4th gen f-bodies.

Did you replace your BCM with a NEW one or a USED one? A new BCM will program itself to match the ignition key used during its first startup and can never be reprogrammed after that. A used BCM will still retain the resistance value of whatever vehicle it came from.

Having a BCM bypass already installed will only complicate things because a new BCM will match itself to the value in the bypass regardless of whatever ignition key is used while a used BCM would be unlikely to find the bypass to have the correct value (a 1 in 14 chance). If the SECURITY light is illuminated in the instrument cluster then you no start condition is definitely caused by VATS. Check that your bypass is correctly installed and that all connections are clean and tight.
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Old Jun 11, 2026 | 09:55 AM
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From: Wesley Chapel, FL
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Originally Posted by WhiteBird00
There is no such thing as a 30 minute BCM relearn - at least not on 4th gen f-bodies.

Did you replace your BCM with a NEW one or a USED one? A new BCM will program itself to match the ignition key used during its first startup and can never be reprogrammed after that. A used BCM will still retain the resistance value of whatever vehicle it came from.

Having a BCM bypass already installed will only complicate things because a new BCM will match itself to the value in the bypass regardless of whatever ignition key is used while a used BCM would be unlikely to find the bypass to have the correct value (a 1 in 14 chance). If the SECURITY light is illuminated in the instrument cluster then you no start condition is definitely caused by VATS. Check that your bypass is correctly installed and that all connections are clean and tight.
It was a new one. It started on the 1st try and won't restart again. I put the old one back in and starts right away just with the steady security light.

I'm over messing with this. I'm taking it to a local speed shop to turn the VATS off in the ECU and putting in the bypass for the starter relay
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Old Jun 11, 2026 | 10:39 AM
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I had VATS tuned out on one of my birds.
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