Question about 1999 Chevrolet Suburban

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Chevy Suburban starts then shuts down in 1 second

This problem happens occasionally and more often when the car has been out in moisture overnight. The engine starts normally and then shuts down immediately after that. You can turn the key off, then on again and the engine will start right up - but then shut down again. If you wait an hour or two, it will start and run normally. We've disconnected the security system to solve the problem - didn't work. We replaced the fuel pump - no help. I've spent a ton of money and still have this problem - it has left my family stranded on three vacations in three years. I've seen so many people post this problem on forums all over the web over the past few years, but have NEVER heard even ONE intelligent response to this problem. Anyone up for a challenge? Bring us Chevy sufferers an answer please.

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  • graemont Jul 31, 2009

    The security light is ON all the time - as we disconnected the entire security system as an attempted "fix."

  • jd625 May 11, 2010

    When it starts normally and then shuts down, what is the security light doing? Does it blink?

  • nieves_2400
    nieves_2400 May 10, 2013

    Now it does

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Check the catalytic convertor. my 99 with 125k would just stop for no reason and a friend put his hand on the exhaust and told me to hit the gas and he said I had no pressure coming out of the tailpipe. drilled a few holes into the convertor and truck runs perfect again

Posted on Dec 07, 2011

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Posted on Jan 02, 2017

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