Cadillac Celestiq 2023–2026 — technical service bulletin
Bulletin PIP6021D · NHTSA communication 11035130 · issued Jul 13, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2023–2026
model years
12
vehicle entries
Official summary
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
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.