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.
#PI1067: Malfunction Indicator Lamp (MIL) Light On, Reduced Power Mode, DTC Set, Poor Performance/Shifts - (Sep 25, 2013)
Subject:Malfunction Indicator Lamp (MIL) Light On, Reduced Power Mode, DTC Set, Poor Performance/ShiftsModels: 2013-2014 Chevrolet Equinox2013-2014 GMC TerrainEquipped with 3.6L Engine (RPO LFX)Condition/ConcernIn rare cases, some customers may comment that the malfunction indicator lamp is on,poor ...