A50 Shift Pattern Issues

Hi All EFILive Experts,

I have been trying to change a couple of the standard shift tables for partial throttle at small Throttle positions on my 2012 Silverado. Long story short this is where i am at, pattern 'A','C','D' did not work, it will only work when i changed the tow/Haul pattern and have it selected. Pattern 'A' does work for changes to TCC apply and release in normal shift pattern mode. On my logger under TSTATE07 is shows 6 shift possible patterns, SPMAIN,SPLIMP,SPCOLD,SPHOT,SPTH,SPNORM. I have only seen the truck in SPNORM or SPTH when in T/H mode. I am after some advice from those that may have seen and solved this before. For the record, I have no interest in doing this for any reason other than personal, I play with Robots and Industrial automation for a living not trucks.

Any help appreciated.

My OS I.D is 24257039 and the transmission I.D is 24257041.

Cheers
James

Did you ever get this figured out?