Transmission Control System (GS 20)

Transmission Control System (GS 20)

















The A5S 360R automatic transmission is controlled by the new GS 20 control module. The acronym (GS) comes from the German word "Getriebesteurung", meaning Gearbox Control.

The design, program development and manufacturing of the GS 20 control system is the result of the combined efforts of BMW, Siemens and GM.

The GS 20 control module is located in the E box in the engine compartment. It utilizes the 134 pin, "SKE" (standard shell construction), modular connector, enclosure.

Its blue connector color designates it a Transmission Control Module. The GS 20 utilizes 3 of the 5 modular connectors.