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    LB7: Vaccum diagram on LB7

    Does anyone have a diagram of how the EGR system should be connected? I need to verify I have the vacuum tubes hooked up correctly. If you simply switch the vacuum tubes on the butterfly valve solenoid, then it will stay closed while driving as it doesnt bleed off the pressure when the...
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    LB7: Not building boost, Fuel Issue, Injector issue?? PLEASE HELP

    Check out this guys issue. Similar conditions to mine... http://www.duramaxforum.com/forum/01-04-5-lb7-duramax-powertrain/153271-low-power-low-boost-no-smoke-no-more-money-help.html#post9432681 The turbo is still what Im thinking the problem is, however after inspecting it, I just had to...
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    LB7: Not building boost, Fuel Issue, Injector issue?? PLEASE HELP

    Thats a good point I like your thinking. But if you consider the conditions when troubleshooting it in person, It just doesn't feel fuel related. If that was the case you could ease into it with a light load and kind of bounce off of the point where it pinches and the rough running and smoke...
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    LB7: Not building boost, Fuel Issue, Injector issue?? PLEASE HELP

    Heres a little update.. After troubleshooting the truck some more I tried everything and couldn't get it to change what its doing. On the computer end, my boost sensor kept reading low values (But my turbo would spool hard and consistent when running good), my MAF readings were low (New MAF...
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    LB7: Not building boost, Fuel Issue, Injector issue?? PLEASE HELP

    Wow im subscribed to this thread but didnt get any emails! I thought someone would ahve replied by now! Im leaning towards an FPR as well. IC pipes are fine. Im pretty confident its not a boost leak. Bad fuel cant be right either, because it runs fine mostly, and then all of the sudden its...
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    LB7: Not building boost, Fuel Issue, Injector issue?? PLEASE HELP

    My truck would run fine until 2000 rpm it would run really rough and smoke white. I plugged my ppe in and read the data. My MAF readings were low but still moving fine (25 at idle, where its usually at 35). My boost reading went from 14.7 at idle down to 9psi! And my DES and ACT fuel readings...
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    2002 Gmc Sierra 2500hd

    bhollehday submitted a new Showcase Item: 2002 Gmc Sierra 2500hd Read more about this showcase item here...
  8. 2002 Gmc Sierra 2500hd

    2002 Gmc Sierra 2500hd

    Full Exhaust, Banks Big Head, PPE Standard, K&N Air Filter
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    Blip after shift

    I have new transdyn fluid, new filter, and new TCM software. And this blip hasnt changed. It isn't everytime, but it happens a lot. It seems like its only lower gears, lower throttle %. It happens with or without the PPE, resetting auto-trans does nothing. It will shift, then immediately...
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