Ford F-250 SD 2006 — technical service bulletin
Bulletin 0674 · NHTSA communication 10019946 · issued Jan 1, 2006
Technical service bulletin
communication type
Electrical System
component
2006
model years
4
vehicle entries
Official summary
Stuck or jumping / bouncing / erratic speedometer and/or tachometer. *tt
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.