Ford F-150 2004–2005 — technical service bulletin
Bulletin 0543 · NHTSA communication 10014643 · issued Mar 7, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2005
model years
2
vehicle entries
Official summary
Cooling fan clutch noise - vehicles built prior to 10/1/2004 - 5.4l and 4.6l engines. *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.