SECURITY Indicator Illuminated and Engine Does Not Start
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The theft deterrent control module or the PCM has detected a problem with the theft deterrent system. The theft deterrent control module is unable to measure the ignition key transponder value. The System is in Learn Mode, refer to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS .