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: Fuel System Description
| Circuit | Description |
|---|---|
| 5 V Reference | Regulated voltage supplied by the control module. |
| Signal | The control module input circuit has an internal resistance connected to ground. |
| Low Reference | Grounded through the control module. |
| Component | Description |
|---|---|
| B47 Fuel Pressure Sensor | The control module uses the fuel pressure sensor to constantly adjust the fuel pump's feed rate so that the ideal pressure is permanently maintained in the low pressure section (between the fuel pump and the high pressure fuel pump) by means of a closed loop control. |
| K38 Chassis Control Module | Depending on the version, the control module can support different functions:
|