Cadillac CT4 2020–2022 — technical service bulletin
Bulletin 22-NA-091 · NHTSA communication 10215650 · issued Jun 29, 2022
Technical service bulletin
communication type
Power Train
component
2020–2022
model years
6
vehicle entries
Official summary
This service bulletin provides repair procedure information to correct a customer concern of a Rear Axle Moan Type Noise During Left or Right Turnsâ â .
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.