Cadillac Lyriq 2023–2026 — technical service bulletin
Bulletin PIC6537D · NHTSA communication 11025457 · issued Nov 4, 2025
Technical service bulletin
communication type
Unknown / Other
component
2023–2026
model years
4
vehicle entries
Official summary
This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that Engineering is working on a resolution.
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.