Toyota Tacoma 2020–2021 — technical service bulletin
Bulletin T-TT-0651-21 · NHTSA communication 10198138 · issued May 19, 2021
Technical service bulletin
communication type
Power Train
component
2020–2021
model years
2
vehicle entries
Official summary
TT: This Tech Tip applies to Tacoma vehicles equipped with a BD20 rear differential ? Part Number: 41110-04130. Some 2020-2021 model year Tacoma customers may be concerned with a whine noise heard from the rear of the vehicle when driving at highways speeds (40+ MPH) and applying light throttle or slowly decelerating.
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.