External Controls (G2006320): Overview

The external controls for the transmission consist of a Transmission Control Switch (TCS), two paddle switches and an Emergency Park Release (EPR) system.

The TCS transmits driver transmission selections to the Transmission Control Module (TCM) on the High Speed (HS) Controller Area Network (CAN) powertrain systems bus. The steering wheel mounted paddle switches can be used to initiate gear changes, with the TCS in either the Drive (D) or Sport(S) position, causing a change of operating mode from automatic gear selection to manual gear selection.

The Emergency Park Release (EPR) is used to put the transmission in Neutral (N) during vehicle recovery operations, when it is not possible to put the transmission in 'N' using the TCS.