Description

This is not a standalone controller. The TCM-2650 is designed for situations where a standalone transmission controller cannot control the transmission directly. The GM 8L90E, comes with an external factory transmission control module (T87 or T87A). These transmission design makes it nearly impossible to directly control the transmission solenoids with a standalone transmission controller. It is also very difficult to remove the transmission and controller from the factory powertrain since all of the transmission parameters are received from other vehicle modules including the engine controller, body control module, etc. The PCS TCM-2650 is an all-in-one solution that will allow the 8L90E transmission and factory T87 controller to be installed in any vehicle with any engine combination and maintain a fully functional transmission. It has been used in many applications and engine combinations, such as Cummin 2.8L, 4BT Diesels, Gen 1 , 2 and 3 GM engines. Whether they are carbureted or Fuel Injected, this system will allow you to use the GM 8 speeds in practically any vehicle, all that is needed is a Throttle Position Signal and Engine RPM Comes with a complete harness and the necessary software to program the TCM-2650 Module.

* The T87 TCM Option is a Factory GM Blank Controller (No Calibration Loaded). It is required if you want to make this work. It does need a Factory calibration loaded on it also.

** The Factory 8L90E Transmission has to be 2019 or older.