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  1. #1

    Default 6.6 life expectancy

    in your experience (or someone elses) how many miles can a 6.6 be expected to run (stock no chip or under 10%) before you are looking at major repars?
    I'm looking at trading trucks looking specificaly for a 2001-2002 duramax and wondering if some of these relatively cheap fleet trucks are worth it or if i will have problems soon if i buy a truck with 200,000-250,000 miles on it.
    Will a 6.6 go 300,000- 4000,000 miles with average maintance before needing a major overhaul/rebuild/ replacement?

  2. #2


    Check this one out..... Over 750k mi Duramax.....

    Airforce Veteran (7 years)

    NRA Life Member

  3. #3
    Jr. Mechanic drillbit26's Avatar
    Join Date
    May 2009
    Floyd, Virginia, United States


    I just purchased a 2002 duramax and it has 182,xxx miles on it and still runs strong, I also was leary about it before I bought it but after looking and talking to other owners I felt comfortable as long as it has not been abused
    2006 Silverado 2500HD, 6.0 Vortec, rhino spray in bed liner, LT package, westin step bars,true dual exhaust
    Mods to come: dixie horn, blacked out bowtie, recon smoked cab lights, recon led brake bar.
    Thank you lord:sign0011:

  4. #4
    Master Mechanic Silverado Junkie's Avatar
    Join Date
    Feb 2010
    Lead Hill, Arkansas


    A Duramax is a strong and reliable motor and will last a very long time if taken care of.
    1995 Silverado,Z71, 3-inch lift,2-inch leveling kit, SkyJacker Suspension, short ram-air intake, throttle body spacer, MSD ignition coil, straight pipes

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