Question about 2006 Hummer H3

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06 hummer displays a padlock and will not start with key

My 06 hummer is displaying a padlock and i cannot get it to start with the key

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Your security system has locked u out, do a pass key reset, if this does not work then u will need the dealer to test the system for a failed part.

PASSKEY LOCKOUT RESET GM (yes it is GM) CARS 1999 UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the passlock system to recognize your key.

Posted on Apr 17, 2009

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