Tired ol' 5.7, 5.3 swap in progressHandle every stressful situation like a dog.If you can't eat it or hump it.Piss on it and walk away.
Duplicate the concern by using the shifter to manually select whatever gear the problem starts in so we'll know if it's D1, D2, D3 then upshift it manually and tell us which next gear up is acting silly so that we're all on the same page.
BTW, it might not do it when shiftd manually.
Maybe. Which gear is what I'm trying to find out.
30 and under is generally gonna be 1st after 30 you are downshifting to 2nd....If its 2nd it could be the band frying or you could have already warped the drum and trashed the band.....it will more than likely need a rebuild soon.
also it is not only the servo which helps apply pressure, but also making a custom pin to keep the clearance within reason.
Since you are so far from TX like me. You should go ahead and order a level 5 from Finish Line Transmissions
Finish Line Transmissions | Performance Transmissions | Power Converters | Transmission Parts | Transmission Service
99RCSB Broke because I wasted thousands and thousands of dollars on my truck.