Can anybody out there help me with some ideas why an 01 1500HD wouldn't do a WOT 2-3 shift? I have lowered the WOT shift speed to 40 and the RPM to 4500, but it still will not command a 2-3 shift at WOT. This truck is pretty custom, and I'm just trying to sort out the trans for him. I got everything else going on it so far, except for the 2-3 WOT shift. The speedo has been corrected as well as the H0104. I did a log and can see it isn't commanding the 2-3 shift when it should be according to the tune file.