Cadillac CT4 2020–2023 — technical service bulletin
Bulletin PIC6536A · NHTSA communication 11015577 · issued Mar 3, 2025
Technical service bulletin
communication type
Steering
component
2020–2023
model years
8
vehicle entries
Official summary
This Preliminary information communicates to the technicians some additional diagnostic steps to perform if they encounter a no crank condition and/or loss of power steering.
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.