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Chevrolet TSB #21-NA-045
2018 Chevrolet Impala
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- This service bulletin informs dealers that a new Power Brake Booster Vacuum Cap will need to be replaced when installing the revised Power Brake Booster Vacuum Pipe to correct DTCs being set due to misrouting of brake booster vacuum pipe.
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