Ford F-150 2011 — technical service bulletin
Bulletin AS-21779 · NHTSA communication 10039112 · issued Mar 1, 2011
Technical service bulletin
communication type
Power Train
component
2011
model years
1
vehicle entries
Official summary
Ford: 2011 f150 raptor. When accelerating from or bringing to a stop there may be excessive clunk or a chirp/slip/bump condition from the driveshaft. *rm
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.