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Home >> GMC >> 2020 >> Acadia SL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W M3V) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P08CA or P08CB >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to : Electronic Component Description

Circuit Description
Control - Terminal 28 Supplied by a control module.
Control - Terminal 10 The output circuit is switched to ground to activate the component.
Component Description
Q77L Transmission Control Solenoid Valve 11 A solenoid valve is an electro-mechanically operated valve. The valve is controlled by an electric current through the solenoid.
This is a normally closed valve that is controlled on/off.
K71 Transmission Control Module The control module contains a microprocessor used to process input data to control outputs.The control module receives information from a variety of sensors, switches and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio and torque converter clutch operation.
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