Volkswagen GTI 2015–2018 — technical service bulletin
Bulletin TT 13 18 01 · NHTSA communication 10149850 · issued Aug 31, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2018
model years
4
vehicle entries
Official summary
Diagnostic checks and repair direction for chirping noise.
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.