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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P0628 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

For an overview of the component/system, refer to : Fuel System Description

Circuit Description
Control The output circuit is switched to 12 V to activate the component.
Component Description
K38 Chassis Control Module Depending on the version, the control module can support different functions :
  • Active Grille Air Shutter
  • Cylinder Deactivation Exhaust Flow Control Valve
  • Engine Mount
  • Exhaust Flow Control Valve
  • Fuel Pressure
  • Fuel Pump
  • Trailer Brake Control
  • Transmission Cooling Fan
  • Transmission Range Control
  • Vehicle Level Control
K20 Engine Control Module The control module contains a microprocessor used to process input data to control outputs.
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.
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