Question about 2001 Chevrolet Tahoe

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My chevy tahoe will not start and the security system light is on on the dashboard

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If the light is flashing it may be an issue with the passlock sensor.Here is a process you can try to reset the passlock. If this process does not work you may need to replace the ignition tumbler and passlock.
PASSKEY LOCKOUT RESET ALL GM CARS 1999 AND 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 PASSKEY system to recognize your key
.

Posted on Mar 08, 2011

  • Sid Hawkins
    Sid Hawkins Dec 10, 2013

    This really does work. I had to reset my Chevy Tahoe's security system. The security sytem problems occurred becuase my battery cable was loose and it casused the computer to think that my truck was being stolen. The security light was would not turn off. But after I tightened the battery cables and followed the instructions listed above, my truck started right up without a problem. Thank you!

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http://vatspasslockpasskeysecurityhelp.yolasite.com/

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