Dodge Challenger 2021–2022 — technical service bulletin
Bulletin S2221000002 · NHTSA communication 10230304 · issued Jul 14, 2022
Technical service bulletin
communication type
Back Over Prevention
component
2021–2022
model years
4
vehicle entries
Official summary
8HP70 Automatic Transmissions Clunk Or Knock Type Noise From The Driveline.
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.