{"nhtsa_id":11027506,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-01-08","date":"2025-12-19","document_id":"CSB25-500-001","mfr_campaign":"25008","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"This service bulletin is about certain vehicles equipped with a Weldon Hercules HC 1.8 node giving timing errors when combined with the Whelen Core and Core R and instructions on how to update the OS version on the node.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027506-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027506-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027506","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"SPARTAN FIRE","model":"GLADIATOR","year_from":2023,"year_to":2025,"match":"exact","vehicle_ids":["2023_spartan-fire_gladiator","2024_spartan-fire_gladiator","2025_spartan-fire_gladiator"]},{"make":"SPARTAN FIRE","model":"METROSTAR","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_spartan-fire_metrostar","2025_spartan-fire_metrostar"]}],"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":[]}