Cadillac Lyriq 2024–2025 — technical service bulletin
Bulletin N25-249456 · NHTSA communication 11016027 · issued Mar 13, 2025
Technical service bulletin
communication type
Unknown / Other
component
2024–2025
model years
2
vehicle entries
Official summary
Update Title: Important Update GM N25-2494560 Release Notes: •Improves accuracy of service messages for high voltage charging system. •Reduces drain on 12V battery. •Improves performance of charging. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
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.