Service bulletins for the 2023 Cadillac CT4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
554 on file from NHTSA, as of 2026-10-19.
About P30C7 on the 2023 Cadillac CT4: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
By topic
Only bulletins with trouble code: P30C7 are shown. Show all
| PIP5843D | 2024-04-15. Service bulletin. EXTERIOR LIGHTING. 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. |
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| PIP5843C | 2023-07-17. Service bulletin. EXTERIOR LIGHTING. 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. |
| PIP5843B | 2023-02-13. Service bulletin. ENGINE AND ENGINE COOLING. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.