P0557 on the 2018 Chevrolet Traverse
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 17-NA-314 | 2021-04-14. Service bulletin. Intermittent Service Power Brake Assist Message With a Brake Shudder and Possible DTC P0557 Set/Stored Condition Customer may comment of an intermittent "Service Power Brake Assist" message which may be accompanied by a brake shudder. During diagnosis a technician may find DTC P0557 set or stored. Cause This condition may be caused by the Power Brake Booster Vacuum Sensor providing intermittent incorrect vacuum values due to circuit board fault. Correction Replace Power Brake Booster Vacuum Sensor & Hose Assembly. |
|---|---|
| 20NA071 | 2020-12-21. Service bulletin. This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored. |
| 20NA071 | 2020-08-10. Service bulletin. This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored. |
| 20NA071 | 2020-05-26. Service bulletin. This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored. |
| 20NA071 | 2020-04-27. Service bulletin. This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored. |
| 17NA314 | 2020-03-30. Service bulletin. This technical bulletin provides a procedure to replace the power brake booster vacuum check valve and hose to correct a condition of Intermittent Service Power Brake Assist Message With a Brake Shudder and Possible DTC P0557 Set/Stored due to the Power Brake Booster Vacuum Sensor providing intermittent incorrect vacuum values due to circuit board fault. |
| 17NA314 | 2018-05-21. Service bulletin. This technical bulletin provides a procedure to replace the power brake booster vacuum check valve and hose to correct a condition of Intermittent Service Power Brake Assist Message With a Brake Shudder and Possible DTC P0557 Set/Stored due to the Power Brake Booster Vacuum Sensor providing intermittent incorrect vacuum values due to circuit board fault. |
| 17NA314 | 2018-04-23. Service bulletin. This technical bulletin provides a procedure to replace the power brake booster vacuum check valve and hose to correct a condition of Intermittent Service Power Brake Assist Message With a Brake Shudder and Possible DTC P0557 Set/Stored due to the Power Brake Booster Vacuum Sensor providing intermittent incorrect vacuum values due to circuit board fault. |
8 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.