Cadillac CT4 2022–2023 — technical service bulletin
Bulletin PIC6496A · NHTSA communication 10237654 · issued May 11, 2023
Technical service bulletin
communication type
Equipment
component
2022–2023
model years
6
vehicle entries
Official summary
This Preliminary information communicates the direction a technician needs to take when DTC P30EF is set.
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.