Ford F-150 1997–1999 — technical service bulletin
Bulletin 6489 · NHTSA communication 6091993 · issued Jun 1, 1999
Technical service bulletin
communication type
Suspension
component
1997–1999
model years
6
vehicle entries
Official summary
Some vehicles built with 3-leaf or 4-leaf rear springs may exhibit a rear spring rattle. *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.