Ford F-250 SD 1999 — technical service bulletin
Bulletin 4615 · NHTSA communication 615152 · issued Aug 1, 1998
Technical service bulletin
communication type
Electrical System
component
1999
model years
2
vehicle entries
Official summary
Information on vehicles exhibiting 4x4 lights on / 4x4 inoperative / multiple gem codes. *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.