{"nhtsa_id":10231665,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-13","date":"2023-01-25","document_id":"PIT5949A","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; STRUCTURE:BODY:HATCHBACK/LIFTGATE; VISIBILITY:SUN/MOON ROOF ASSEMBLY","mfr_system":null,"summary":"This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231665-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231665-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231665","components":[{"id":"structure-body","name":"Body and frame","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"sunroof","name":"Sunroof","parent":"visibility"}],"codes":["B1A7A","U1121"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_cadillac_escalade-esv","2022_cadillac_escalade-esv","2023_cadillac_escalade-esv"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_suburban","2022_chevrolet_suburban","2023_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_tahoe","2022_chevrolet_tahoe","2023_chevrolet_tahoe"]},{"make":"GMC","model":"YUKON XL","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_gmc_yukon-xl","2022_gmc_yukon-xl","2023_gmc_yukon-xl"]}],"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":[]}