Toyota Tundra 2014–2017 — technical service bulletin
Bulletin T-TT-0418-16 · NHTSA communication 10111270 · issued Sep 29, 2016
Technical service bulletin
communication type
Structure
component
2014–2017
model years
4
vehicle entries
Official summary
TT: Customer may note a "creaking" or "crackling" noise coming from the lower front end. This has been attributed in several cases to the TRD front skid plate contacting the frame cross member.
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.