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Dan, Technician
Category: Chevy
Satisfied Customers: 24208
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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99 chevy lumina: security light stays..starter

Customer Question

security light stays on 99 chev lumina 3.1 but it will start with and without car starter
Submitted: 7 years ago.
Category: Chevy
Expert:  Dan replied 7 years ago.
The most common cause of the security light to come on is a failing ignition switch but to know for sure you will need to bring the vehicle to a shop to have them connect a high end scantool to have them check the diagnostic codes for the anti-theft system. With the codes they might be able to tell you the problem if not you can reply here at anytime. But without the code there is no way to tell you the exact problem. Let me know if you have questions, thanks.