09 Tahoe Security Lock

[ufdemt15]

I have a 2009 Tahoe SSV that was functioning completely normal. While working to enable the rear tail light flashers blue/yellow wire some of the BCM pins were shorted to ground momentarily during testing and now the vehicle will not turn over and has the security lock light on. Attempts to reprogram the key using the 30 min procedure were unsuccessful due to the security light staying on solid and never turning off during the reset procedure. No ODB2 codes show and the key is reported to be showing up in the BCM. The vehicle was towed to a local dealer to reprogram a used bcm or the original bcm without any changes in the security lock. Does anyone have any suggestions? The dealer is 3 weeks out from being able to look more in-depth at the vehicle so any thoughts would be helpful.

 

[TJBaker57]

No ODB2 codes show

Exactly what was used to scan for codes and was the BCM scanned specifically or was only a generic vehicle scanning done?

 

[ufdemt15]

Exactly what was used to scan for codes and was the BCM scanned specifically or was only a generic vehicle scanning done?

Generic Scan for that. They did mention B1380 06 though many of those issues didn't make sense as all wires are intact and connected to the same place as nothing was removed. All grounding was to the back of the connectors that plug into the BCM with a probe. Key is reported to be recognized by the car.

 

[Mooseman]

I did find this video with the exact same problem.

Otherwise, it may be the sensor in the ignition key lock, which would require a dealer level scanner to relearn (Tech 2, MDI, SnapOn Verus, etc.).

Another solution would be to have the PCM tuned to turn off VATS and allow it to start regardless. Just need to find a tuner hopefully locally that's able to do it.

 

[Mooseman]

If you do need a tune, Jeremy @limequat can do it at a reasonable cost and has a quick turnaround.

Engine Swap Reflash Disabe VATS

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www.lime-swap.com

 

[ufdemt15]

I did find this video with the exact same problem.

Otherwise, it may be the sensor in the ignition key lock, which would require a dealer level scanner to relearn (Tech 2, MDI, SnapOn Verus, etc.).

Another solution would be to have the PCM tuned to turn off VATS and allow it to start regardless. Just need to find a tuner hopefully locally that's able to do it.

That was exactly it. Thank you so much!

 

[Mooseman]

So was it the fuse?