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Buick TSB #17NA314
2018 Buick Enclave
TSB Document:
Affected Component: EQUIPMENT
- Summary
- 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.
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