Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #PIE0665C

2021 GMC Sierra 3500

TSB Document:

MC-10222842-0001.pdf

Affected Component: ENGINE AND ENGINE COOLING

Summary: This engineering information (EI) closure ends the need for further information from the field in regards to Service Engine Soon (SES) Lamp illuminated and/or Ã¢??Service Emissions SystemÃ¢?? message on the Driver Information Center (DIC).

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Date Published: SEP 29, 2022
NHTSA TSB #: 10222842

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