A year ago, I had a problem starting my car (a 2004 Chevrolet Impala, about 120,000 miles). When I put the key in the ignition, the engine wouldn’t turn. I knew there wasn’t a problem with the battery because my lights, radio, etc. were still operating fine. Instead, I got a bright flashing “SECU…

Ignition and Security Warnings in '04 Chevy Impala

cpa0217 October 24, 2012, 11:19pm 8

This happened to my daughter’s 2007 Impala… Including the SECURITY message on the display. A new battery fixed the problem. While that may not be your problem, it’s an inexpensive place to start.