Cadillac CT4 2019–2022 — technical service bulletin
Bulletin PIP5843A · NHTSA communication 10230684 · issued Dec 5, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2022
model years
11
vehicle entries
Official summary
This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated During Cold Ambient Temperatures with DTCs P30C3 and/or P30BF P30C7 P30CB Setting.
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.