Chevrolet Malibu no-start issue due to anti-theft lockout with symptoms of anti-theft light on on Chevrolet Malibu

Some Chevrolet Malibu owners report experiencing no-start issues due to anti-theft lockouts, often indicated by an illuminated anti-theft light. These problems may arise from a failed passlock sensor, which can prevent the vehicle from starting and requires diagnostic attention. Additionally, some owners find that checking trouble codes is essential for identifying specific issues within the anti-theft system. In some instances, resetting the system by turning on the electrical system without starting the engine can resolve the lockout. Faulty wiring or connections are also common culprits, as damaged or corroded wiring can hinder communication between the key fob and the engine control module. In emergencies, some owners may need to disable the anti-theft system to start their vehicle, as modern systems can immobilize the engine via the ECU. Understanding these issues and troubleshooting methods can help drivers effectively address and resolve no-start situations related to anti-theft lockouts.