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  1. #1

    Default 2004 sierra sle v8

    i have a coolant leak and can not find it, any suggestions. I had an oil change yesterday no signs of coolant in oil. put cardboard under sierra found nothing leaking. I have put about one litre in the last 3 months

  2. #2


    Welcome to the G M T C ! You will probably have a better chance for an answer if you post your question in the appropriate "Tech." section. Good luck!

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  3. #3

    Red Z71 Max's Avatar
    Join Date
    May 2011
    Myrtle Beach, SC
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    Welcome to the Club!!

    (Scott) Myrtle Beach, SC
    January 2012 ROTM WINNER
    2011 GMC Sierra Z71 MAX 6.2 L w/ Trailering Package
    Rough Country, XD Rockstars, Nitto Trail Grapplers, N Fab, Lund Genesis, Putco, Gator Grip,
    Flowmaster 40 series, Diablosport InTune, Banks Ram Air CAI,
    WeatherTech, AVS Aeroskin, Tow Mirrors,

  4. #4


    Welcome to the club. How do your hoses and connections look?

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