03 Silverado trans tuning

[Silverad03z71]

I am new to using diablosport tuners and have found it quite easy to tune my truck with the T2 ex tuner however I have a few questions someone more knowledgable could answer. I have it updated to the latest version and had the dealer flash the latest factory 4l60e updates but however I seem to be missing the abitliy to turn torque management off as it only lets me change the parameters from 0-200 on it. I have read others can set it from simply on to off or even some have said they can adjust from -20 to +20 so idk why mine would be different. Also I have no option to choose the "firm" trans tune while tuning the truck that others say they can use. Any help or ideas would be appreciated!

[mikel]

Your truck does not use a TCM like the 07+ models, so there is no specific trans tune to select.
On these setting the TM to -20% is off.


Thanks

[Silverad03z71]

Ah I see thanks for the info! However when I am modifying the tune parameters it gives me no option to put in a negative value for torque management. It will only allow me to adjust from 0 to +200 which I assume is adding TM. Does the tune have TM disabled by default already?

[mikel]

Yes it does.