Ford F Super Duty 1999 — technical service bulletin
Bulletin 99169 · NHTSA communication 607665 · issued Aug 9, 1999
Technical service bulletin
communication type
Power Train
component
1999
model years
2
vehicle entries
Official summary
Some vehicles may exhibit a no 3-4 upshift, or a 3-4 / 4-3 shift hunt only while the cruise control is in use. *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.