Question about 1999 Chevrolet Blazer

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Chevy Blazer 1999,car doesn't keep running after started ,car has Passlock

Security light stays on we have tried putting in a new battery, new alternator, new fuel pump, new spark plugs,new fuel valve ,checked all the fuses.we checked that the ignition had spark until it shut off

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  • Anonymous Mar 15, 2014

    new alternator and new battery and car still wont charge and i check the fuse and they are good

  • Anonymous Mar 27, 2014

    I just nee to crank my car without messing it up since I have lost the key and dont have any money for a locksmith.

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  • 507 Answers

Hmmm, sounds like an ignition switch problem. Not the tumbler/key switch, the ignition switch.

Posted on Sep 07, 2008

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This car is equipped with Passlock antitheft security by GM. You dont have a chip, but there is a transponder in the key head. This system is known to fail. The fact that the security light is on proves the failure of the Passlock and why it wont run. The hard part is finding out which part of the passlock system has failed. Read this link for info and DO IT YOURSELF solutions to the problem.

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