Ford Mustang 2020–2021 — technical service bulletin
Bulletin TSB 21-2108 · NHTSA communication 10191174 · issued Apr 12, 2021
Technical service bulletin
communication type
Power Train
component
2020–2021
model years
2
vehicle entries
Official summary
Some 2020-2021 Mustang GT500 vehicles may exhibit a transmission fluid leak caused by improperly seated transmission cooler tubes attached to the transmission case. If the threads in the transmission case that the cooler tube retaining bolts go into are damaged, it is not necessary to replace the transmission. These threads can be repaired. To correct the condition, follow the Service Procedure to repair these threads.
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.