Cadillac CT4 2020–2024 — technical service bulletin
Bulletin PIC6516 · NHTSA communication 10242292 · issued Aug 8, 2023
Technical service bulletin
communication type
Parking Brake
component
2020–2024
model years
10
vehicle entries
Official summary
This Preliminary information communicates diagnostic tips for Advanced Parking Assist being inop.
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.