Hello everyone, looking for some help here. I have an 02 trailblazer with an issue that has been ocuring over the last few weeks. At WOT, the vehicle has a significant loss of power at 40mph. It will accelerate rather slowly up to 40, then the speed will just hang there until i let off the gas, at which point it will shift hard into the next gear. No DTC set in the PCM, new plugs, new fuel filter, and throttle body cleaned with no change in the issue. fuel pressure is ~45 KOEO, ~52 KOER. I also ran it with the front O2 sensor unscrewed, rpms still hang. I do have access to a Tech2, if any other data is needed