{"nhtsa_id":11018656,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-29","date":"2025-05-22","document_id":"PIP6067","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018656-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018656-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018656","components":[],"codes":["P0420"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"XT4","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_cadillac_xt4","2025_cadillac_xt4"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}