Genesis G80 2021–2024 — technical service bulletin
Bulletin 24-HA-001G · NHTSA communication 11009411 · issued Oct 24, 2024
Technical service bulletin
communication type
Unknown OR Other
component
2021–2024
model years
13
vehicle entries
Official summary
Certain Genesis vehicles (listed below) equipped with Lambda-III 3.5T-GDI engines may exhibit reduced heater performance due to engine coolant deposits clogging the heater core. This bulletin provides instructions to verify the concern and to replace the front and rear heater core (if applicable).
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.