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Thread: 2000 Silverado 5.3 Hard To Start Warm

  1. #1
    Junior Member
    Join Date
    Feb 2010
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    Spring, Texas
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    2000 Silverado 5.3 Hard To Start Warm

    My 2000 Silverado 5.3 is very hard to start when it is warmed up. When it is cold it will start right up. Also, if left to idle for 15 minutes or so, it will bring on the Check Engine light. This should be no problem except I cannot read the codes from the OBDII. It only works for the inspection stations not for the normal obdii readers. I have been checking for a possible vacuum leak somewhere in the line to the transmission or vapor cannister. Is there something that I can do to fix the code output connection or just get a new computer?

  2. #2
    Senior Member
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    Nov 2009
    Location
    winchester, va
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    autozone or advanced can read the codes.

  3. #3
    Senior Member
    Join Date
    Mar 2007
    Posts
    139
    my 2000 model obs had trans problems but part store readers could not read codes.

    gm dealer reader show trans slip codes.

    so you may have to have dealership read the codes for you.

    just a thought.

    something is wrong or you would not get the service engine light.

  4. #4
    Senior Member
    Join Date
    Feb 2010
    Location
    Central Missouri
    Posts
    841
    Check power and grounds and fuses there has to be a reason for no communication. With out knowing what the codes are its going to be next to impossable to identfy your problem

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