BUICK, CHEVROLET
17NA314
Manufacturer communications
- Publication date
- 2020-02-13
- Received by NHTSA
- 2020-03-30
- NHTSA record numbers
- 10172778
Manufacturer summary
Original wording in English
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.
Reported code forms
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