La Wicked Blue

Well I have some problem with the truck with shifting early on wot while the shift point is set at 7, 100...the tranny is an 4l60 built no problem with the tranny hitting the rev nor the engine light is off....idk if some solenoids or sensors from the tranny not working properly or the tps or maf are not working properly....the problem is most when running the truck at the track when shifting 1-2......idk what is the problem. ...thanks