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  1. 06-07 LBZ & LLY Duramax Powertrain
    when I first got my truck (2006 3500 dmax with 140k on it) the engine temp stayed right at the 180 degree mark. A couple months ago, I noticed that it would creep up a little on long uphill grades. The issue slowly became worse until it would slowly creep up just accelerating. After talking with...
    high engine temp
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