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  1. #1
    Jr. Apprentice
    Join Date
    Feb 2010
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    southern illinois
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    17

    Cool 2007 silverado 2500HD 6.0 ticking sound

    i test drove a 2007 silverado 2500HD 6.0 classic 4x4 and noticed when i accelerated the engine would make a ticking sound and would quit as soon as i let off. im just curious to see if its something common that motor will do or if its a problem...


    THanks for the help!

  2. #2
    Jr. Engineer Gmcsuvguy's Avatar
    Join Date
    Dec 2007
    Location
    Alberta, Canada
    Posts
    279

    Default

    Was the engine cold? Some of the engines had piston "slap" until the engine warmed up and then it would go away. Or did it sound like lifter clicking?
    Ken Beida
    2010 GMC Sierra Crew Cab 4X4, 5.3L
    2009 GMC Sierra Denali, 6.2L = 403hp, AWD, Full load

  3. #3

    Default

    Sometimes a exhaust leak will sound like a ticking also. But he is right about the piston slap

  4. #4
    Jr. Apprentice
    Join Date
    Feb 2010
    Location
    southern illinois
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    17

    Default

    yea the truck was cold at time of start and it diffenetly didn't sound like an exhaust leak

  5. #5
    Jr. Engineer Gmcsuvguy's Avatar
    Join Date
    Dec 2007
    Location
    Alberta, Canada
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    279

    Default

    My 01 Yukon had the piston tick noise, it went away after about 5 minutes, never got any worse.

  6. #6

    Default 07 Trailblazer SS with piston slap

    Quote Originally Posted by quakaddict09 View Post
    i test drove a 2007 silverado 2500HD 6.0 classic 4x4 and noticed when i accelerated the engine would make a ticking sound and would quit as soon as i let off. im just curious to see if its something common that motor will do or if its a problem...


    THanks for the help!

    I recently purchased an 07 Trailblazer SS with definite piston slap and have read that many 6.0 spin out the number 6. Piston slap is know in earlier model GM engines (99 thru 02). Anyone else with 2003 and up piston slap

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