Ford Mustang 1999 — technical service bulletin
Bulletin 12740 · NHTSA communication 6091709 · issued May 1, 1999
Technical service bulletin
communication type
Visibility
component
1999
model years
1
vehicle entries
Official summary
Some vehicles equipped with a 4.6l 2v engine may exhibit a moan / groan from the heater core area of the vehicle. *tt
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.