Okay, the problem is directly related to the anti theft. See pic 1
There are two ways to relearn the new switch. One is with a GM tech 1 scanner and other hardware or you can try it manually. The manual way is similar to what I told you to try, but adds more steps. I don't know if you tried this technique. However, it is right from my manual. If this doesn't work, it will need reprogrammed by a shop or dealer with the proper tooling. Try this if you haven't already. It requires a minimum of 30 minutes without a scanner.
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30 Minute Learn Procedure
1. Turn ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON. The 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. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock(TM) Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
6. Start the engine. The vehicle has now learned the Passlock(TM) Sensor Data Code and/or password.
IMPORTANT: The vehicle learns the Passlock(TM) Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.
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Let me know if that helps. We need to get your wife out of the uber vehicle. LOL
Joe
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Tuesday, February 11th, 2020 AT 8:04 PM
