Good day guys,
I had my truck dyno tuned a few weeks ago by my local tuner,....looks like my local tuner increased my Normal - Shift Speed table,... but, when I look at my TCC Apply Release Speed table, it's very low (in comparison to the shift speed table),.... can you guys have a look at the attached tables (screenshot) and put your expert eye on it?,... I've included both tables for quick reference.
Basically, as an example,.. at 25% throttle, I shift into 4th gear at 49MPH,...yet at that same 25% throttle, my TCC Apply for 4th is 28MPH??? Can this be right???? Additionally, when I look across the length of the entire TCC Apply/Release table,...I thought all the "release speeds" were ALWAYS supposed to be lower than the "apply speeds",... or am I wrong here???
Maybe this is why I'm getting a loud/quick shudder type noise from my transmission when my truck downshifts under a slightly heavy foot????
Thank our Lord for HPTuners,.... without it I would have never guessed.
My Truck;
1996 GMC K1500 4x4
5.7L swapped to an HT383e
0411 swap from LexTech, with his base tune,....originally, before local tuner got into it
FLT Level 5 4L60e with Sonnax 3-4 drum upgrade
3.73 rear
TCC Question.png
Thanks guys for the help.