Service bulletins for the 2025 Cadillac XT4
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.
250 on file from NHTSA, as of 2026-10-19.
About P0420 on the 2025 Cadillac XT4: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P0420 are shown. Show all
| PIP6067 | 2025-05-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician to replace the catalytic converter, pre and post oxygens sensor as an assembly. Engineering is collecting parts to determine the cause of the P0420. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.