Is your defective GMC Sierra 1500 actually a LEMON?

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GMC TSB #20NA110

2021 GMC Sierra 1500

TSB Document:

MC-10214200-9999.pdf

Affected Component: EQUIPMENT ADAPTIVE/MOBILITY

Summary: This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.

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Date Published: JAN 13, 2022
NHTSA TSB #: 10214200

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