Cadillac Lyriq 2023–2024 — technical service bulletin
Bulletin PIC6561A · NHTSA communication 11029271 · issued Feb 25, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2023–2024
model years
2
vehicle entries
Official summary
This Preliminary information communicates that U3000 SYM49 may be found setting in the Drivers Monitoring Control Module.
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.