Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #22-NA-201

2021 GMC Sierra 3500

TSB Document:

MC-10225608-0001.pdf

Affected Component: ELECTRICAL SYSTEM

Summary: This technical bulletin provides repair information to correct a customer concern of MIL L5P ECM/TCM Update with DTCs Set.

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Date Published: OCT 17, 2022
NHTSA TSB #: 10225608

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