GGGGggggggggrrrrrrrrrrr!!!!!!!! If you've been following the problem, feel free to skip to the ******. To recap: When I drive at cruising speed, the 'burban lurches. When I start it up it's fine, when I'm under power it's fine, and when I have the foot off the gas pedal it's fine. The lurching/hesitation only happens when I want to cruise at a certain speed. If I press on the pedal enough to keep myself going 70 it feels as though the engine misses, causing it to feel like I'm towing a car dolly with a huge car on it - those that have hauled someone on the dolly will most like know what I'm talking about. ---update---I've now got a tiny bit of rough idle, especially right after cold start. I have now tried three fixes! The first was a new fuel filter. Cheap, easy, and step #1. The second comes about because I have a twitching [COLOR=blue ! important][COLOR=blue ! important]fuel [COLOR=blue ! important]gauges[/COLOR][/COLOR][/COLOR]. The needle twitches/buzzes really fast and gives inaccurate readings at times. Because of this combined with the hesitation I changed out the fuel pump assembly and replaced it with a new one. That didn't help either. I actually broke down and went to the dealership and paid the $80 to have them diagnose the problem. Now, I don't mean any disrespect, but for the last few years of going to the dealership (or any garage) for a diagnostics I felt it's been more of a 'guess-nostic'. 95% of the time they being wrong as to what the problem is. When it came back they told me O2 sensors needed replacement, both banks, sensors 2. ******So I changed both of the post cat sensors and..... the problem continues!!!! Went back to the dealership this morning and tossed them the keys again, told them to diagnose again. This time they came back with... $675.00's worth of "spark plugs, wires, distributor, and cap." I didn't have the energy to say "Wait... so ALL the plugs need replacement, ALL the wires need replacement, AND the distributor AND the cap.... all those need replacement!?" SO!... I bring this to your scrutiny once again. WTH is going on here? Anyone feel like coming to help diagnose what may actually be wrong with this thing before I start to dislike it and sell it just to do without the hassle?! :mdr: ME =====>:fighting0072: <======Dealership Comments, ideas, insights all welcome!