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6.5 detroit

  1. K

    6.5 Vac pump delete w/o AC

    Hey guys, making this thread because I have a 1994 K2500 with a 6.5 Turbo diesel with 150,000 KM. The vac pump went on me the other day which I was going to delete once I got to it anyway. Well it seems to be a lot more complicated than that. Everything I’ve read of people doing the delete...
    • KevinC
    • Thread
    • 6.5 detroit chevrolet k2500 vacuum pump delete
    • Replies: 2
    • Forum: GM 6.5 Diesel
  2. J

    Surging on downhill and flat driving surfaces:

    2000 3500HD with low mileage (75000 Orig) When I am going downhill or on a flat surface the engine surges often dropping as much as 800 rpm. If I move the accelerator pedal slightly it snaps back. I also cannot press the accelerator while sitting still and maintain a constant rpm. It wants to...
  3. J

    6.5 Feeling Sluggish

    Hi all, I have a 95 3/4ton ext cab long bed w the 6.5 and 4l80 and 4.10 rear limited slip. I was merging out onto the interstate today and needed to pick up speed quickly. I put the hammer down and struggled to outrun a semi truck. Once she gets up to 80 she cruises fine. Low speeds are fine for...
    • Jacku21
    • Thread
    • 1995 2500 4l80e 6.5 detroit extended cab
    • Replies: 6
    • Forum: GM 6.5 Diesel
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