Chrysler 300 2020–2023 — technical service bulletin
Bulletin 9100455 · NHTSA communication 11012379 · issued Jan 4, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2020–2023
model years
12
vehicle entries
Official summary
EXHAUST - MUFFLER AND TAILPIPE For Exhaust noise squeak during startup acceleration deceleration please do following: 1. DO NOT remove actuators 2. Verify noise by cycling EEV manually via WiTech 3. Verify noise with test drive (optional) 4. If the noise is confirmed, replace the system without removing the actuators.
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.