Sable V6-183 3.0L DOHC VIN S MFI (1997)
Overdrive Indicator Lamp: Description and Operation
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The Transmission Control Switch (TCS) is a momentary contact switch. When this switch is pressed, a signal is sent to the Powertrain Control
Module (PCM).
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The powertrain control module then energizes the Transmission Control Indicator Lamp (TCIL) and toggles Solenoid 3 (SS3), applying the
forward clutch to provide engine braking and canceling fourth gear operation.
