Is your defective GMC Sierra 3500 actually a LEMON?

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GMC TSB #PIT6132

2024 GMC Sierra 3500

TSB Document:

MC-10253080-9999.pdf

Affected Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

Summary: This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.

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Date Published: MAR 12, 2024
NHTSA TSB #: 10253080

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