Cadillac XT4 2024–2025 — technical service bulletin
Bulletin PIP6067 · NHTSA communication 11018656 · issued May 22, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
2
vehicle entries
Official summary
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.
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.