Is your defective GMC Sierra 2500 actually a LEMON?

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GMC TSB #19NA237

2022 GMC Sierra 2500

TSB Document:

MC-10212616-9999.pdf

Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

Summary: This informational bulletin explains how to identify possible DEF contamination.

Click a tab for more information.

Date Published: JAN 10, 2022
NHTSA TSB #: 10212616

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