Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #03-06-01-023G

2021 GMC Sierra 3500

TSB Document:

MC-10240344-0001.pdf

Affected Component: ENGINE AND ENGINE COOLING

Summary: This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.

Click a tab for more information.

Date Published: JUL 31, 2023
NHTSA TSB #: 10240344

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