Dodge Durango 2018–2020 — technical service bulletin
Bulletin 2302320 · NHTSA communication 10221884 · issued Aug 25, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2020
model years
3
vehicle entries
Official summary
Rear Heater Coolant Tube Repair This bulletin involves inspecting and possibly repairing the rear heater coolant return tube. Customers may comment on one or more of the following:A coolant leak or fluid appearing from under the vehicle. Elevated engine coolant temperature and/or indication of overheating.
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.