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  1. Duramax Second Generation: 2004.5-2005 (LLY)
    I've been slowly getting my newly purchased LLY up to par. The fuel guage has never worked correctly and the previous owner said it had been out for a while. When I bought it the odometer read error yet the gear indicator worked. For 2 weeks of driving there wasn't anything weird happening...
  2. Vans
    So we have a 14 passenger bus with the LGH engine. Somehow, someone wasn't reading the messages during the whole regen stuff and get the bus into the 4mph limp. Every stinking sensor has been replaced on the thing and the local diesel shop can't get it out of limp. Everyone seems at wits end...
  3. 6.5L Diesel Engine
    I’ve got a 1996 Chevy Cheyenne K2500. It has full power in park and neutral but no power when in drive. NEW- FUEL FILTER LIFT PUMP INJECTION PUMP GLOW PLUGS OIL PRESSURE SENSOR Air filter it will cut off if i give it any pedal in gear but it will redline in park.
  4. Duramax Fourth Generation: 2007.5-2010 (LMM)
    What’s up guys. I’m having a hell of a time with it right now. Truck has been down for almost 6 months. I did a full EGR delete with new up pipes down pipe and intercooler pipes. Yes I have efi live in the truck. After doing the full EGR delete I got random codes. Ended up having the truck towed...
  5. Duramax First Generation: 2001-2004 (LB7)
    My 01 3500 LB7 will go into limp mode when towing. It has to be sort of a long hill. I need about 10 seconds up hill with at least an empty gooseneck trailer. I did catch a code months back, P0234 overboost. But it rarely throws a code when it goes into limp mode. I finally got a pillar...
  6. 6.5L Diesel Engine
    Good afternoon im back with more 6.5 headaches. My 6.5 is throwing p0251 injection pump fuel metering control a (cam/rotor/injector) I just had the Injection pump replaced with one from Heath diesel, Had new injectors put in as well, Mechanic said while he was in there redoing the injection pump...
  7. 6.5L Diesel Engine
    Hello I have a 1995 6.5l 2500 I have a power loss issue that I’ve been fighting for a year now truck starts perfectly fine and sounds good. Blows some black smoke at startup then clears up. When I take it for a drive following the speed limits and driving very easy as far as acceleration there...
  8. Medium Duty Trucks
    Ok So first and foremost I am not very mechanical sound. Especially on diesels. This is my first diesel and may I say, I am not loving it.. It is a pain in the a*s.. Hopefully I give you enough info that maybe someone can help me fiqure this out.. I have read some of the fourms and used the...
  9. Duramax First Generation: 2001-2004 (LB7)
    My truck has been sitting for a week. I was driving and it went into limp mode throwing codes p0201, p0204, p0206, p0207. After a while of checking around with out tools it finally started running right. Towed it home anyways. I checked around the fcim to see if any wires were messed up. It was...
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