Chevy and GMC Duramax Diesel Forum banner

2003 lb7

  1. White smoke need help (it's not injectors)

    01-04.5 LB7 Duramax Powertrain
    I just recently bought my first Duramax a 2003 LB7 with 245K miles, I knowingly bought it with bad injectors as that's one of the weak points and I had a well known diesel shop install Some Bosh reman injectors and fuel lines as well as a fass fuel pump/sump and fuel bowl delete. It hasn't...
  2. Fuel Gauge

    Gauges, Electronics and Wiring.
    I have a 2003 LB7 I bought completely stock from the original owner with 130,000 miles. I put a 6” lift on with 35s and shortly after this I notice issues with the fuel gauge. When I fill it up the needle never gets completely to full. I also run out of fuel and the gauge indicates I have 1/4...
  3. shavings at fuel injector

    01-04.5 LB7 Duramax Powertrain
    In the process of changing injectors when I noticed 2 of them had metal shavings where the fuel lines attach. One was so clogged it couldn't have been working. Any suggestions what might cause the problem? What would I need to replace.
Top