Question about 1999 Chevrolet Silverado 1500

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How to reset security ignition on a 1999 chevy silverado?

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Give this a try.

Auto Learn

1. Clear all DTCs. See scan tool manufacturer's instructions. Turn ignition off. Replace component(s) as

necessary.

2. With transmission in Park (A/T) or Neutral (M/T), turn ignition switch momentarily to START position (DO

NOT start engine). Leave ignition in RUN position (engine off). If Passlock(tm) sensor was replaced,

SECURITY indicator light will flash for 10 minutes. If Passlock(tm) module was replaced, SECURITY

indicator light will flash for a few seconds, then stay on for 10 minutes. If PCM/VCM was replaced with a

new PCM/VCM, vehicle may start and procedure may not be needed. If replacement PCM/VCM was used

even momentarily, SECURITY indicator light will flash for a few seconds, then stay on for 10 minutes. After

10 minutes, when light turns off, turn ignition switch to OFF position for 10 seconds.

3. Repeat step 2 twice more. Auto learn procedure will be completed during next start attempt. Clear all DTCs.

If PCM/VCM was replaced, reprogram PCM/VCM. See appropriate SELF-DIAGNOSTICS article in

ENGINE PERFORMANCE.


NOTE: This procedure allows relearning of Passlock(tm) module or PCM/VCM learned

data code after replacement of Passlock(tm) module, Passlock(tm) sensor or

PCM/VCM. DTC B3031 will set when entering programming mode.

-1999 Chevrolet Silverado 1500


Posted on Sep 08, 2014

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You can't do it. It has to be done by the dealer. The dealer is the only party who has the reset code. You will just have to fork out the money on this one. Each vehicle has its own unique code for the computer.

Posted on Sep 08, 2014

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You have to have a guy reprogram the body module.

Posted on Sep 08, 2014

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There is a lot of info on this site that you can read up on. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Sep 07, 2014

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Posted on Jan 02, 2017

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tayjoejoe_13.jpg

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