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  1. 01-04.5 LB7 Duramax Powertrain
    2014 chevy silverado 3500 HD 6.6L Duramax / 6 speed Allison... While getting some brake work done, I was thinking of having the transmission flushed. But the mechanic told me that if it's never been done before, I could have a blown transmission within a week. I guess a flush would clean all...
  2. Maintenance
    So This is my first post been readin forums here since I invested in a new to me 2007.5 Silverado 3500HD LTZ. it's got just shy of 150K miles on it and since I don't know much of its history I am trying to get all the major maintenance items done before winter.:shock It's my first duramax and...