Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #16-NA-380

2024 GMC Sierra 3500

TSB Document:

MC-10233844-0001.pdf

Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

Summary: This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.

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Date Published: MAR 15, 2023
NHTSA TSB #: 10233844

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