{"nhtsa_id":11028860,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-18","date":"2026-02-13","document_id":"PIC6642A","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This PI communicates a possible concern with the customer experiencing a service headlamp message on startup and DTC's B1B5F SYM49 and/or B1B60 SYM49 maybe found current or history.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028860-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028860-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028860","components":[],"codes":["B1B5F","B1B60"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"LYRIQ","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_cadillac_lyriq","2024_cadillac_lyriq","2025_cadillac_lyriq","2026_cadillac_lyriq"]}],"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":[]}