Posted 12/13/2025 22:27 (#11469182 - in reply to #11468803) Subject: RE: GM 6L90 Slip in 6th
If it doesn’t do it in 6th it’s probably not the torque converter. It sounds like you probably have a clutch pack going. Most vehicles will increase the transmission pressure when in tow/haul so that makes sense that it wouldn’t slip with it on. Here is some information about it.
GM 6L90 Slip in 6th
