GMC TSB #PIT5868B

2020 GMC Sierra 2500

TSB Document:

Affected Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

Summary
This Preliminary information communicates an issues will low or poor heater performance on the drivers side.  Dealers are to inspect the HVAC temperature door linkage and if ok replace the heater core.

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Date Published
JAN 17, 2023
NHTSA TSB #
10231649
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