Chevrolet Silverado 1500 2022–2023 — technical service bulletin
Bulletin PIT6032B · NHTSA communication 10239177 · issued Jun 26, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2022–2023
model years
10
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.