TCM shift patterns

[JoshH]

Is there any way you guys can find the rest of the shift patterns in the TCM? In part throttle 1->2 upshift and 2->1 it has patterns E through H which is for the shifter in the '2' position. It would be cool if you could the patterns for that position in all the tables, both part and full throttle. I believe those patterns are actually for the 'M' position so if you could find them it would give us an actual tiptronic type controll where we could force an upshift or downshift.

[JoshH]

Ross, any word on this?

[lennox69]

Is there any way you guys can find the rest of the shift patterns in the TCM? In part throttle 1->2 upshift and 2->1 it has patterns E through H which is for the shifter in the '2' position. It would be cool if you could the patterns for that position in all the tables, both part and full throttle. I believe those patterns are actually for the 'M' position so if you could find them it would give us an actual tiptronic type controll where we could force an upshift or downshift.

i don't get what you are trying , but i have program my own tune, i have the shift up and down acorring to tps and wot positions check my tune out and see.let me know what you think.

[LBZ]

i don't get what you are trying , but i have program my own tune, i have the shift up and down acorring to tps and wot positions check my tune out and see.let me know what you think.

Which OS is this tune for?

[lennox69]

Which OS is this tune for?

for a 2007 allison 6 speed.

[NCT]

what is the os though? 105?

[GMPX]

Is there any way you guys can find the rest of the shift patterns in the TCM? In part throttle 1->2 upshift and 2->1 it has patterns E through H which is for the shifter in the '2' position. It would be cool if you could the patterns for that position in all the tables, both part and full throttle. I believe those patterns are actually for the 'M' position so if you could find them it would give us an actual tiptronic type controll where we could force an upshift or downshift.

I'm not sure I get exactly what you mean.
They generally have special case shifts for the selector in 1 or 2, not 3 to 6 as well.

Cheers,
Ross

[JoshH]

For 1->2 and 2->1 in the part throttle and I think WOT there are 8 different shift patterns. There is normal, t/h, 4 low, transmission hot, normal with selector in '2', t/h with selector in '2', 4 low with selector in '2' and transmission hot with selector in '2'. Well, on the 6 speed there is no '2' position, there is an 'M' position, and each gear is selected with the +/- buttons on the shifter. With stock programming this just serves as a way to limit the highest available gear, but the transmission will still downshift if it sees the appropriate speed/throttle position.

I was wondering if all those shift patterns were available for the rest of the gears too. Then we could possibly program the shifts so that a gear will not downshift unless you tell it to with the +/- buttons.

Does that make sense now?

[LBZ]

I like where you are going with that thinking Josh. Making it a true powershift transmission would be very nice!

[lennox69]

for a 2007 allison 6 speed.

IF YOU OPEN THE TUNE FILE IT WILL SAY THE OS.