LS Series Gen 4 Harness and ECM,TCM
For Car engine with electric throttle body, 58 tooth reluctor ring, and 6L80E/6L90E
Includes new harness, re-flashed ECM (engine control module) and reflashed TCM (transmission control module).
Note: The 6L80E/6L90E has the TCM built into the transmission valve body. Please call to coordinate re-flashing of your existing TCM.
5.3L Engine Size