Chevrolet Silverado 1500 2023–2024 — technical service bulletin
Bulletin PIT6032C · NHTSA communication 10247342 · issued Nov 2, 2023
Technical service bulletin
communication type
Visibility
component
2023–2024
model years
9
vehicle entries
Official summary
This Preliminary information communicates an issue with the front HVAC blower speed reducing to a lower speeding when it should be higher. Engineering is working on a fix.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.