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  1. 6.5L Diesel Engine
    What do y’all run for rpms down the highway? I have a weird issue I think the tranny is new I don’t think the OD is kicking in At 62 mph I’m at 2,500 rpms and top gear what rpms can these motors hold for extended periods of time? If the OD is not kicking in are there any connections or...
  2. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    I recently purchased a 2007 Duramax Classic HD 3/4 ton 4 door pickup with 173,000 miles. Seemed to be in good shape but since I'm new to diesels I had a highly recommended mechanic check it out and he said it looked well cared for. I had fluids and filters updated right away and installed a...
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