Cadillac Escalade IQ 2025–2026 — technical service bulletin
Bulletin PIT6319B · NHTSA communication 11016145 · issued Mar 24, 2025
Technical service bulletin
communication type
Unknown / Other
component
2025–2026
model years
2
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 engineering is working on updated software.
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.