External Controls

External Controls

Transmission Selector Lever - 5R555, 6R80









The selector lever cable transfers the transmission operating mode from the selector lever to the transmission. The indicated position of the selector lever is transferred to the transmission through the selector lever linkage, then to the selector lever cable and bracket and down to the manual control lever on the transmission.


Brake Shift Interlock System

The brake shift interlock system prevents moving the selector lever from the PARK position until the brake pedal is applied. The brake shift interlock system consists of a Brake Shift Interlock Actuator (BSIA) mounted on the selector lever. When the ignition switch is in the RUN position and the selector lever is in PARK, the BSIA is energized when the brake pedal is applied. This will allow the selector lever to be moved from the PARK position.

If the selector lever will not move out of the PARK position with the key in the ON position and the brake pedal applied, it will need to be unlocked manually. For additional information, refer to Brake Shift Interlock Override Service and Repair.


Transmission Control Switch (TCS)

The Transmission Control Switch (TCS) is a momentary contact switch located on the selector lever knob. Pushing the TCS will either disengage or engage the overdrive function of the transmission. If OVERDRIVE is disengaged, the message O/D OFF will illuminate on the Instrument Cluster (IC).