Monday, September 21, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Enclave 2021–2022technical service bulletin

Bulletin N25-250552 · NHTSA communication 11028977 · issued Feb 5, 2026

Technical service bulletin
communication type
Unknown / Other
component
2021–2022
model years
37
vehicle entries

Official summary

Improvements to OnStar functionality. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.

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.