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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0961-P0963 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

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

Circuit Description
Control The output circuit is switched to ground to activate the component.
The output is PWM controlled.
Component Description
K71 Transmission Control Module The control module contains a microprocessor used to process input data to control outputs.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.
Q8 Control Solenoid Valve Assembly A linear solenoid actuator is an electro-mechanical device that converts electrical power into a mechanical pushing or pulling force or motion.
  • The solenoid actuator varies the force depending on the current applied to the solenoid coil.
  • The solenoid actuator applies minimum force with minimum current applied to the solenoid coil.
  • The solenoid actuator applies maximum force with maximum current applied to the solenoid coil.
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