{"nhtsa_id":11022219,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2025-08-29","date":"2025-08-06","document_id":"653.20","mfr_campaign":"653.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"VICM: VICM (Vehicle Integration Control Module)","summary":"GM Update 653.20 • Improvements to vehicle diagnostics. • Fixes to preserve battery life and improve charging. • Fixes to address issues with shifting. • Fixes for vehicle airflow in icy conditions. • Improvements to HVAC compressor performance. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022219-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022219-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11022219","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"LYRIQ","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_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":[]}