Ford F-350 SD 1999 — technical service bulletin
Bulletin 985033 · NHTSA communication 613073 · issued Nov 1, 1998
Technical service bulletin
communication type
Power Train
component
1999
model years
1
vehicle entries
Official summary
Some dural rear wheel vehicles with 5.4/6.8/7.3l engines may still exhibit a chatter noise from the rear axle during turns after following the procedure outlined in oasis ssm# 11768. *t
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.