Cadillac Lyriq 2025 — technical service bulletin
Bulletin PIT6319A · NHTSA communication 11013402 · issued Jan 29, 2025
Technical service bulletin
communication type
Unknown / Other
component
2025
model years
4
vehicle entries
Official summary
This Preliminary information communicates that a customer may experience a service high voltage message with a loss of heat. The technician may find P1C01 in history. The technician is advised that updated software will be released in the future. The dealer should advise the customer to cycle the ignition on and off to temporarily resolve the concern.
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.