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Buick TSB #21NA124

2017 Buick Envision

TSB Document:

MC-10198890-9999.pdf

Affected Component: ELECTRICAL SYSTEM

Summary: This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

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Date Published: MAY 25, 2021
NHTSA TSB #: 10198890

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