2010 Tahoe with 6L80, tune for longevity and towing

[hjtrbo]

GM does lock up the converter. I'm only across the one OS at the moment but new parameters have been added to the scanner showing the TCC mode and PCA pressure for the later OS that use the desired pressure table. The TCC modes are off, coast, on and lock. In on and coast modes the converter slips. When torque demand reaches a threshold it goes into lock mode. The reference slip goes to 0 and the pressure goes right up. Always learning new stuff.

[TransGo Robert]

Could disabling AFM and no TCC lock in 1-4 result in a somewhat less 'dynamic' transmission system result in a less 'active' PR valve potentially reducing wear?

This is great info TransGo. Thank you for sharing. The clutch plate with woven carbon lining definitely seems like it was designed with slip in mind rather than designed to lock

No, lockup command has no effect on the PR valve bore wear.

[Tech1340]

I have 2010 Tahoe 2WD that I have the TCC lock-up turned off until 5th and 6th for years with about 180k on the clock along with AFM. In my opinion it makes it way smoother to drive and keeps it in the ?power band? in normal and tow haul mode. I?ve also changed the spark control for torque management to immediate instead of ramp which helps the shift feel more positive. I?ve done this same thing to multiple other vehicles haven?t had any issue and they all love how smooth they drive. One thing I will recommend is after you make any changes to the transmission tune make sure to reset the adapts with the scanner and allow it to relearn. It will be clunky at first but will smooth out.