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  1. 6.5L Diesel Engine
    Hello everyone. I looked over the forum for some time but this is my first time posting. I have 3 issues possibly related or possibly not. Truck currently surges between 1500-1900 RPM. This issue started last week and truck has been parked since. Once at 2k it over powers the issue and is not...
  2. Duramax Second Generation: 2004.5-2005 (LLY)
    How much oil pressure am I suppose to have? My LLY at idle is just around 25 then jumps to over 60 when I'm cruising down the road. What are you guys getting out of your trucks?
  3. Duramax Fourth Generation: 2007.5-2010 (LMM)
    Oil pressure gauge seems to be a little low when driving on highway with engine rpm's is around 1500, gauge is reading 30 psi. I was just wondering what everybody elses was reading? Thanks
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