Mercedes-Benz AMG GLC43 2020 — technical service bulletin
Bulletin NCU-2020080006 · NHTSA communication 10179974 · issued Aug 21, 2020
Technical service bulletin
communication type
Power Train
component
2020
model years
3
vehicle entries
Official summary
Check seal bellows at wheel carrier supporting joint of left and right rear axle, replace if necessary
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.