HELP!!! 4L60E 2-3 shift problem
can someone plz help me out. my 4l60e wont shift from 2-3 under WOT all the time. it shiftsfrom 1-2 really good and chirps the tires but will only shift 2-3 under 75%throttle or less. i really dont like the noise of the rev limiter =(. it was just really weird cuz i had 6 runs down the track where only 2 times it shifted from 2-3 under WOT. the other 4 times i had to get off the throttle. i was thinkingthe problem might be because the tranny is low on fluid or i would need tobuy a hypertech tuner to change my cars shift points.my car is a 1995 camaro z28. all the help would be appreciated.