Question about GMC Sierra 1500

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I changed a steering column in a 98 gmc truck 1500 and the truck will start and then dies instantly. security light is flashing so don't know if something needs resetting or what.acts like a fuel problem because i can feed gas in the throttle body and it will run.

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  • appleton_aut Dec 31, 2010

    no chip but security light is flashing.how do i reset this?

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If there was a chip in the key you will have to get the new colum programed to match the orginal computer

Posted on Dec 31, 2010

  • Christopher Mckay Dec 31, 2010

    try this to bypass or reset the security system turn the key to the on position and wait 10 minutes... the security light should stop flashing... then turn the key off for 5 seconds and then restart the car. the problem is in the tumbler itself and to fix the problem you will need to replace the tumbler.
    if that doesn't work you will have to have the dealer reprogram it they program it through the obd2 plug

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Here diagrams for all 1989 GMC trucks.

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