Ford F-250 SD 1999 — technical service bulletin
Bulletin 12085 · NHTSA communication 613066 · issued Nov 1, 1998
Technical service bulletin
communication type
Power Train
component
1999
model years
2
vehicle entries
Official summary
Some vehicles equipped with electronic shift on the fly transfer cases and built prior to 7.22/98 may exhibit a pop noise within 30 seconds after engine start. *mjs
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.