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  1. Duramax Fourth Generation: 2007.5-2010 (LMM)
    so I'm having a p0087 problem ,if I accelerate past 3000rpm or near it with in 2-400 rpm on the high side truck goes in to limp mode. I can clear it on the edge cts and i get power back although I cant always get it to put up a cel light I am the 2nd owner as far as I know the previous owner...
  2. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    2 summers ago towing 35' travel trailer north thru Louisiana 107 degrees went into limp. 0087, changed fuel filter. Truck always ran hotter than I liked, so changed fan clutch at destination in Michigan. Heading south back to Florida in mountains limp. Now have obd2, got going again faster...
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