99 gmc 5.3 3.42 gear ratio bigger tires 265/75/16. im noticing that at low speeds and basically no throttle my truck bogs down turning the wheel I don't even have to max out the pump... would this be corrected by increasing idle speeds? also seems like it does it morem often when warmed up and I noticed once its like 125degrees and hotter the idle speed is set at 525 through out the charge if I set it to 550 im thinking it ight have enough power to turn the wheels. Since I have a 3.42 gears and don't want to switch ive already adjusted my shift speeds and downshift speeds higher to make up for the low spots. I figure I gota make a run and don't have time to switch it right this second. Or else id just try it but I know for sure One of you know the answer so please let me know not only if I should raise my idle speeds but about how much higher and anything else I might run into... thanks guys :S