Cadillac Lyriq 2024–2025 — technical service bulletin
Bulletin PIT6351 · NHTSA communication 11015641 · issued Mar 10, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
7
vehicle entries
Official summary
This Preliminary information communicates a vehicle may have a Service AC message. On diagnosis code P0071 will be found. The technician is directed to diagnose the circuits following SI. Tech is advised not to replace any parts and that engineering is working on a design improvement.
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.