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  1. 01-04.5 LB7 Duramax Powertrain
    Howdy all, I’ve got a 03 LB7 that I’ve had a new ecm and ficm I installed and after programming the ecm it fired just fine and ran. That was two days ago, now she’s cranking n no start, did the prime a few times (like 6) and still crank no start. I have two codes 370 & 540. I know the ficm is...
  2. 01-04.5 LB7 Duramax Powertrain
    I have a 2002 LB7 with 211k miles, truck is stock other than Fass lift pump, 4” straight pipe, and AFE intake. Recently, I was driving the truck home and when I got about 2 miles from the house, it started knocking terribly, and misfiring, but only at idle. I got it home, and discovered that the...
  3. 01-04.5 LB7 Duramax Powertrain
    So I relashed valves on drivers side the noise in my intake went away and today it popped back up today seems quieterAfter valves Before valves After valves After valves please watch and let me know I’m hopeing the truck is fixed it runs really nice now just worried it’s not running properly still
1-3 of 3 Results