Is your defective GMC Yukon actually a LEMON?

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GMC TSB #13-08-116-001I

2021 GMC Yukon

TSB Document:

MC-10239102-0001.pdf

Affected Component: ELECTRICAL SYSTEM

Summary: The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

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Date Published: JUN 29, 2023
NHTSA TSB #: 10239102

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