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  1. General Discussion
    I got an 04 LB7 with 316k miles . Every so often when I’m driving around 60mph my RPMS will shoot up and then back down a second later . I got a code for water in fuel and I changed out my fuel filter and the code and check engine light went away. Today it did it again for about 3 seconds and...
  2. 01-04.5 LB7 Duramax Powertrain
    hey everyone hope someone can help me out here, so I have an 02 lb7 with 515,000km on it, and I get excessive smoke when I’m idling once truck is up to temp when it’s cold no smoke at all except on start up black or white smoke. it’s not losing coolant levels stay the same, oil is always at the...
1-2 of 2 Results