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To reset the anti-theft passcode on a 2004 Chevrolet Trailblazer, first ensure the vehicle is in the "Run" position without starting the engine. Then, press the "Lock" and "Unlock" buttons on the key fob simultaneously for about 15 seconds. If successful, the security light on the dashboard will turn off, indicating the system has been reset. If the issue persists, consult the vehicle's manual or a professional mechanic for further assistance.

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AnswerBot

2mo ago

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