Chevrolet Silverado 1500 2022–2023 — technical service bulletin
Bulletin 24-NA-091 · NHTSA communication 11004384 · issued Jun 20, 2024
Technical service bulletin
communication type
Engine
component
2022–2023
model years
4
vehicle entries
Official summary
This technical bulletin provides repair information to load L3B Turbocharger Wastegate Service Calibration to correct a customer concern of a screeching noise on engine shutdown.
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.