Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #PIP5711B

2021 GMC Sierra 3500

TSB Document:

MC-10208052-9999.pdf

Affected Component: ELECTRICAL SYSTEM

Summary: This Preliminary information communicates to the dealer technicians a warm engine knock noise hasÂ no short or long term effects on the engine. Do not attempt repairs for this noise.Â

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Date Published: JAN 24, 2022
NHTSA TSB #: 10208052

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