Buick Envista 2024–2025 — technical service bulletin
Bulletin PIT6230A · NHTSA communication 11011407 · issued Oct 1, 2024
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
4
vehicle entries
Official summary
This Preliminary information communicates the technician the diagnostic steps needed for an accurate diagnosis of a refrigerant leak at the receiver/dryer cap area.
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.