How do you reset scuriLock anti-theft system in your 08 Chevy trailblazer?

To reset the Securilock anti-theft system in your 2008 Chevy Trailblazer, start by ensuring the vehicle is off. Insert the key into the ignition and turn it to the "On" position without starting the engine. Wait for about 10 minutes until the security light on the dashboard stops blinking and remains on, then turn the key off. Finally, try starting the vehicle again; it should reset the system. If the problem persists, consult your owner's manual or a professional mechanic.