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  1. L5P TSB (service bulletins, recalls, updates)
    Hello All I am new to posting but have been visiting this site ever since I bought my 2017 2500 HD Sierra Duramax. Im looking for anyone else who has had to following issue to share information with. This past Friday morning it was cold (Toronto, Ontario) and my rear defrost was on. I smelled...
  2. 11-16 LML Duramax Powertrain
    I recently went to my dealer to have the DEF program updated as part of the voluntary recall that I got in the mail. Even though the computer says everything is working properly, to me it seems that the turbo slower to build boost and I have lost a few MPG since the reprogram. GM says the...
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