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poor cooling

  1. 6.5 overheating

    6.5L Diesel Engine
    Hello all, I am new to this forum and hoping I can get some help. I have a 1995 k2500 suburban 4x4 with the stock 6.5 gm diesel out of a 1998. It has approx. 140k on it. My issue is I cannot keep it from overheating when I am towing my camper. Which fully loaded with gear and all that good stuff...
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