Hello there! I got a 2002 trailblazer with 151298 miles and p1275 and p1280 code on the scanner! I also have reduced engine power. I've cleaned the grounds, checked the wires from the pcm. Tps looks great. No blown fuses. Other then replacing the pedal sensor which I'm told 99% isn't the issue I'm having a hard time figuring the problem. I'm not just trying to replace stuff I'm trying to learn why. I did see something about fan clutch can effect acceleration. But mine doesn't do anything. HELP PLEASE!