Toyota Tacoma 2016–2023 — technical service bulletin
Bulletin T-TT-0721-23 · NHTSA communication 10234312 · issued Mar 6, 2023
Technical service bulletin
communication type
Electrical System
component
2016–2023
model years
8
vehicle entries
Official summary
TT: Electronic Parts Catalog (EPC) does not include notes requiring ordering the Protector Heater seals when replacing the air conditioning Evaporator Core (87511- #####) or Radiator Heater Unit Sub-Assembly (87107- #####).
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.