Is your defective GMC Sierra 1500 actually a LEMON?

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TSB Document:

Affected Component: ELECTRICAL SYSTEM:SOFTWARE

Summary
'Your vehicle keeps getting better. This vehicle software update includes the following if equipped: Refinements:​ • Improvement to reduce risk of unintended check engine light illumination Better Never Stops™ During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.

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Date Published
JUN 20, 2023
NHTSA TSB #
10238234
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