Ford F-250 SD 1999 — technical service bulletin
Bulletin 11788 · NHTSA communication 615290 · issued Aug 1, 1998
Technical service bulletin
communication type
Power Train
component
1999
model years
2
vehicle entries
Official summary
Some trucks equipped with the 7.3l di and 4r100 transmission may exhibit an approximate 200 - 300 rpm shift flare (rise in rpm) during the 2-3 or 3-4 shift. *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.