EZ-TCU Wiring Harness for '93-Up 4L80E.

For computer controlled transmissions, nothing beats the TCI EZ-TCU Transmission Controller. The EZ-TCU allows for maximum electronic control over shift points, shift firmness and shift speed. No software, laptop or tuning experience is required, and power data logging and self diagnostics allow users of every skill level to fully utilize the unit. Simply install it according to the enclosed instructions, and then start the system by answering the simple Setup Wizard questions on the included hand-held unit. Its that easy