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Security Light The security light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. If the system is working normally, the indicator light turns off. If the light stays on and the engine does not start, there could be a problem with the theft-deterrent system. See Immobilizer Operation > page 23.
Page 23 (referenced above):
Immobilizer Operation The vehicle has a passive theft-deterrent system. The security light comes on in the instrument cluster if there is a problem with arming or disarming the theft-deterrent system. This light also comes on briefly when the engine is started. The system is automatically armed when the ignition is turned off. The immobilization system is disarmed when the ignition is turned on or placed in ACC/ACCESSORY and a valid remote key is found in the vehicle. You do not have to manually arm or disarm the system. The system has one or more remote keys that are matched to an immobilizer control unit in the vehicle. Only a correctly matched remote key starts the vehicle. The vehicle may not start if the remote key is damaged. If the engine does not start and the security light comes on, there may be a problem with the immobilizer system. Try starting the vehicle again. If the vehicle does not start and the remote key appears to be undamaged, try another remote key. Or, place the remote key in the cupholder backup location. See Remote Keyless Entry (RKE) System Operation 0 7. If the engine still does not start with the other remote key, or with the remote key in the cupholder backup location, the vehicle needs service. If the engine does start, the first remote key may be faulty. See your dealer or have a new remote key programmed to the vehicle. The immobilizer system can learn new or replacement remote keys. Up to eight remote keys can be programmed for the vehicle. To program additional remote keys, see “Programming Remote Keys to the Vehicle” under Remote Keyless Entry (RKE) System Operation 0 7. Do not leave the remote key or device that disarms or deactivates the theft-deterrent system in the vehicle.
https://my.chevrolet.com/content/dam...ers-manual.pdf
https://www.chevrolet.com/bypass/pcf...21FEB17_2P.pdf













