Chrysler 300 2016–2020 — technical service bulletin
Bulletin 9004227 · NHTSA communication 10175009 · issued Mar 4, 2020
Technical service bulletin
communication type
Equipment
component
2016–2020
model years
15
vehicle entries
Official summary
CORE, Heater (with tubes) When replacing the heater core for LA, LX, and LD vehicles, make sure to return not only the heater core but also the connecting tubes, seals and retainers. For any questions contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
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.