Buick TSB #21NA278

2018 Buick Regal

TSB Document:

Affected Component: ELECTRICAL SYSTEM

Summary
This service bulletin provides diagnostic strategy information to aid in diagnosing a Ticking, Tap or Rattle Noise from Engine with Possible Misfire, Malfunction Indicator Lamp (MIL) Illuminated.

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Date Published
NOV 23, 2021
NHTSA TSB #
10205594
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