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GMC TSB #21NA101

2020 GMC Sierra 1500

TSB Document:

MC-10199269-9999.pdf

Affected Component: STRUCTURE:BODY:DOOR

Summary: This service bulletin provides a procedure to replace both front door seals to correct a customer concern of Howl, Hoot, or Whistle Type Noise when Driving in Crosswinds.

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Date Published: MAY 10, 2021
NHTSA TSB #: 10199269

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