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low power

  1. 07.5-10 LMM Duramax Powertrain
    So I’m brand new to owning a diesel and trying to figure this all out. But anyway I bought an 08 LMM with 180K. I replaced the egr valve right away ( had the low flow error and that’s what the mechanic told me to do). But I got the low flow again a month later and cleared it right away and it...