Buick Enclave 2020–2024 — technical service bulletin
Bulletin 21-NA-023 · NHTSA communication 11003801 · issued Jun 13, 2024
Technical service bulletin
communication type
Engine
component
2020–2024
model years
10
vehicle entries
Official summary
This technical bulletin provides a procedure to install dampeners on the purge line to correct a customer concern of a loud tick or rattle noise from the engine compartment.
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.