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How can I reset the security system on my 2003 GMC Envoy?
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4 answers
★ Top Answer
To reset the security system on a 2003 GMC Envoy, you can turn the ignition key to the on position and attempt to start the engine. The engine won't start. Leave the key in the same position for 10 minutes, and the security light will flash before turning off. This situation can arise from changing or draining the battery or due to a faulty pass lock sensor triggering the anti-theft system and preventing the car from running. Various issues, such as system alarms, may require troubleshooting or OBD diagnosis to identify the specific problem.
More answers
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To reprogram the security system on a 2003 GMC Envoy, you should turn the vehicle on without starting the engine and keep the key in that position for 10 minutes.
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I removed the fuses from my car, and now it won't start. What can I do to get my car running again?
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Grab the car key and use it to lock and unlock the driver's side door to reset the security system.
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