Is your defective GMC Sierra 2500 actually a LEMON?

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GMC TSB #PIT5909B

2021 GMC Sierra 2500

TSB Document:

MC-10240804-9999.pdf

Affected Component: EQUIPMENT:ELECTRICAL

Summary: This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed.

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Date Published: JUL 31, 2023
NHTSA TSB #: 10240804

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