Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #20-NA-218

2021 GMC Sierra 3500

TSB Document:

MC-10213034-0001.pdf

Affected Component: ENGINE AND ENGINE COOLING

Summary: This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.

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Date Published: MAY 19, 2022
NHTSA TSB #: 10213034

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