Service bulletins for the 2021 Buick Enclave
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
658 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Exhaust and emissions are shown. Show all
| 19-NA-044 | 2024-02-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. |
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| PIP5681C | 2022-05-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This Preliminary information communicates a poor weld or low weld adhesion for the bracket on the Bank 2 front exhaust pipe causing multiple possible concerns and the recommended repairs. Added 2020 MY. Added 2021 Model Year and added all possible affected countries. Corrected direction and add 2022 MY. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.