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GMC TSB #PIT6132
2024 GMC Sierra 1500
TSB Document:
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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