Is your defective GMC Sierra 1500 actually a LEMON?

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GMC TSB #20-NA-090

2023 GMC Sierra 1500

TSB Document:

MC-10240361-0001.pdf

Affected Component: ELECTRICAL SYSTEM

Summary: This informational bulletin provides a way for the technician to identify if the ECM has been modified.

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Date Published: JUL 31, 2023
NHTSA TSB #: 10240361

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