LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P189C >> Circuit/System Description

Circuit/System Description

Circuit Description
Serial Data Digitally encoded information for communication between devices.
Component Description
K20 Engine Control Module The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.
K71 Transmission Control Module 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.
S3 Transmission Shift Lever The assembly contains the following components: P2 Automatic Transmission Control Indicator & S156 Transmission Shift Lever Knob