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  1. LB7 - DuramaxDiesels.com

    Dec 24, 2025 · Lb7 Oil Level Switch - Struggling with Pin 70 2002holding Mar 3, 2025 Replies 3 Views 376 Mar 4, 2025

  2. LB7: - Fuel in oil and oil leak | DuramaxDiesels.com

    Oct 17, 2011 · What year is your truck? Sounds like a LB7, they have the most problems with fuel in oil. If it is a LB7 more likey it's injectors. I have never heard of the cp3 putting fuel in the engine oil but it …

  3. LB7 - Ultra Reliable 600 RWHP Build - DuramaxDiesels.com

    Feb 5, 2021 · Thinking about long-term plans for my truck (2003 CCSB 4x4 LB7). Let's say the goal is 600 rwhp (or enough to run 7.99 in full street trim in a 7000 pound truck) and to be as reliable as …

  4. LB7 stock turbo longevity and upgrade options?

    May 19, 2023 · LB7 can't get a P2563 or P003A as they're a fixed geometry turbo from the factory with a mechanical wastegate. The stage 1 powermax turbos aren't bad but they also aren't great. The …

  5. LB7 Blowing Smoke under heavy acceleration - DuramaxDiesels.com

    Oct 5, 2023 · I bought a green extended cab lb7 with 125k miles on it a few months ago and have been noticing this problem slowly getting worse. It seems to be that whenever I really get into the throttle I …

  6. Tune Library - DuramaxDiesels.com

    Aug 17, 2024 · LB7: Looking for a stock and a tow tune. strokerz Nov 21, 2019 Replies 10 Views 3K Nov 26, 2019

  7. LB7: - Glow plug Controller??? | DuramaxDiesels.com

    Apr 15, 2019 · The LB7 federal tune basically won't throw codes for the glow plug or intake heater at all. I honestly don't know why they even added those feedback wires. I know the federal lb7’s throw a …

  8. LB7: - Rail Pressure Issues | DuramaxDiesels.com

    Jan 9, 2012 · Been looking around on the interwebby and not finding much on the issue i'm having with an 02 LB7. The truck surges/hunts at idle like an FPR going bad. When it was cold at idle in park and …

  9. LB7: - Fuel Pressure specification | DuramaxDiesels.com

    Oct 12, 2012 · Does anyone know what the fuel rail pressure should be at idle?

  10. Help! Broke off part of LB7 glow plug - DuramaxDiesels.com

    Sep 7, 2021 · This is a 1 owner, 102k mile LB7. Attached is a picture of what broke off of the stuck glow plug, and what the other half looks like that is still stuck in the head.