{"nhtsa_id":11026728,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-12-22","date":"2025-12-19","document_id":"PIT6469","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This preliminary information communicates an issue with the turn signals flashing fast after reprogramming the lighting control module. Dealer are to contact TCSC to obtain the correct cals for the lighting control module.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026728-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026728-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026728","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_chevrolet_silverado"]}],"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":[]}