How do you tune torque converter clutch lockup?
Here is what the documentation says. Each point links to its source; tables and names vary by computer, operating system and tuning software.
- P01, P59, E38, E67; LM7, LQ4, LQ9, LS1, LS2, LS3; 1999-2013: HP Tuners' TCC Lock During Shift parameter controls whether the converter clutch stays applied across a gearshift; enabling lock-through-shift is described as extremely hard on the transmission and TCC. (HP Tuners)
- P01, P59, E38, E67; LM7, LQ4, LQ9, LS1, LS2, LS3; 1999-2013: HP Tuners provides separate TCC apply/release speed tables for Normal, Cruise, Performance, Hot, 4WD Low, and Tap Up/Tap Down modes, plus dedicated WOT apply/release schedules; the apply/release tables are indexed by TPS and gear. (HP Tuners)
- P01, P59, E38, E67; LM7, LQ4, LQ9, LS1, LS2, LS3; 1999-2013: The TCC Release TPS table defines how much throttle is needed to unlock the converter at a given speed and gear, and HP Tuners also provides maximum and minimum TCC duty-cycle tables that vary with desired line pressure and transmission oil temperature. (HP Tuners)
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Confidence: medium — sources disagree or are limited; check the sources below.
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Sources
- GM > Transmission > Auto TCC — HP Tuners