Cadillac Lyriq 2023–2025 — technical service bulletin
Bulletin 662.20 · NHTSA communication 11035437 · issued Jul 14, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2023–2025
model years
3
vehicle entries
Official summary
• Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics
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.