Cadillac Lyriq 2023–2024 — technical service bulletin
Bulletin PIP5952 · NHTSA communication 10249285 · issued Dec 12, 2023
Technical service bulletin
communication type
Electrical System
component
2023–2024
model years
3
vehicle entries
Official summary
This preliminary information communicates to all field technicians the imperative protocol that if any of the listed codes are detected, currently or historically, the specified procedure must be strictly followed prior to the replacement of any A28B secondary contactor assembly. This advisory highlights that the presence of these codes could be indicative of a potential calibration anomaly. By following the outlined procedure, it is likely that the concern can be resolved without the necessity for additional parts.
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.