1. L

    2003 GMC Yukon XL 1500

    I am wondering if anybody has any suggestions for me. Here is the story... (a little back ground info, I don't know if this is important or not) In May of 2012, we were going on a little road trip. The car started hesitating quite a bit while on the interstate (going 76 mph). The check engine...
  2. J

    Hesitation at speed

    Hello all.... I own a 1998 Suburban 1500. I have a problem where you will feel a hesitation or stuttering from 45-65. Under steady light acceleration or just holding speed, you feel what seems like a misfire. I have no MIL light coming on. I have changed wires, plugs, cap, rotor (vehicle...