On my 2003 Impala, I just had inspected and had a catalytic converter replaced on, for some reason had the SECURITY light on while driving for a little while. Now it started and drove normally, unlike many searches on the Internet, which said theirs did not start. Why would the SECURITY …

2003 Chevy Impala Security Light Question

willey March 3, 2009, 5:55pm 3

If that light is on there should be a diagnostic code stored. Has anyone hooked up scanner to read the codes? If not then that’s where you need to start.