Has anyone found a fix for the 2-3 shift banging the rev limiter at WOT threw tunning. I have adjusted so much stuff I dont know what is what anymore. I have had three tranny shops tell me it must be tunning. and the gm scan tool is not showing a commanded shift.

02 z28 4L60e
3000 stall
procharger
3.73 gears

 

Have you checked your line pressure at wot yet? Is your tranny vac modulated?I have been working on a buddies car for a few weeks now trying to get his right.I got mine shifting great a few weeks ago.

Joe