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  1. 04.5-05 LLY Duramax Powertrain
    Hey all, check engine light came on 4 days ago, pulled the code (and cleared it) yesterday and it was P0670. Today, it came back on. I have been reading and want to pick your brains. Who has had this problem and how did you make it go away? I could replace the module if I am 100% sure it...
  2. 04.5-05 LLY Duramax Powertrain
    Truck has been not wanting to start lately and it pulls trouble code P0670 and there is diesel sitting on top of where the fuel filter screws in. Wondering what is going on Please help!
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