Is your defective GMC Sierra 1500 actually a LEMON?

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GMC TSB #22NA022

2021 GMC Sierra 1500

TSB Document:

MC-10214239-9999.pdf

Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS

Summary: This Informational bulletin advises the technician of a possible oil leak at the front cover and how to diagnose it to verify if it is coming from the seal or not.

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Date Published: FEB 01, 2022
NHTSA TSB #: 10214239

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