Mercedes-Benz AMG GLC43 2019–2020 — technical service bulletin
Bulletin LI83.10-P-069466 · NHTSA communication 10183244 · issued Oct 12, 2020
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2019–2020
model years
8
vehicle entries
Official summary
Vehicle interior whistling noises (also stationary)/high cabin interior pressure
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.