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gmc 2500 k series

  1. General Rodding Tech
    Hey, I have a 2000 GMC 2500 series K, 4x4, automatic, 5.7L, 350hp. The problem is it's got major power loss and is running through a lot more fuel than it should. It runs like the timing is off, but it's not. I need to know what all the computer readings should be to make the motor run good...