Ford F-250 SD 1999 — technical service bulletin
Bulletin 4648 · NHTSA communication 615185 · issued Aug 1, 1998
Technical service bulletin
communication type
Suspension
component
1999
model years
2
vehicle entries
Official summary
Some 4x4 trucks with 137 inch and 142 inch wheelbases may exhibit a noise / vibration, on decel, between 60 - 30 mph. *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.