The TCM920S is a fully automatic controller for the GM 4 series transmissions. Requires no PC for programming or setup , all settings including gear change and TCC engage are made right from the front of the controller with the 4 small buttons and the 2 Line LCD screen.

Works with all GM 4L60E to 4L80E RWD and 4T45E, 4T60E, 4T65E, 4T80E FWD transmissions. Full manual shifting mode as well with one of our optional Ratchet shift boxes (sold separately).Includes our custom 6 foot wire harness made from high temp TXL automotive grade wire with foil shielded signal wires. (Connectors sold separately)See the products page for all your connector needs.

Controller Actual Dimensions = Width 5.25" Height 3" Depth 1.75"

E-TransControl, LLC Copyright 2021

Terms of Use