How should TCC lockup be wired and tuned when running a 4L80E on a 4L60E calibration in a swap?
Here is what the documentation says. Each point links to its source; tables and names vary by computer, operating system and tuning software.
- Vortec; 1999-2006: 4L60E/4L80E swaps require a two-position brake switch for proper TCC function; incorrect wiring can leave the torque converter unable to unlock. (Speedway Motors)
More in transmission tuning, or build a checklist for your swap with the tune checklist tool.
Confidence: medium — sources disagree or are limited; check the sources below.
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Sources
- WH1201 Gen III LS Standalone Wiring Harness installation manual — Speedway Motors