{"nhtsa_id":11016390,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-04-02","date":"2025-03-11","document_id":"SB_731","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"To improve customer experiences by eliminating most needs for an engineering review, this service bulletin clarifies the upgrade procedure from PBA200-400 to a PBA500 governor. Two options are available: 1. The first option applies only to vehicles without a PUC pump and are upgrading from a PBA200-400 to the PBA500 governor. 2. The second option applies to vehicles with a PUC pump and is upgrading from the PBA200-400 to the PBA500 governor.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016390-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016390-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11016390","components":[],"codes":[],"topics":[],"vehicles":[{"make":"PIERCE","model":"CUSTOM CHASSIS","year_from":2001,"year_to":2006,"match":null,"vehicle_ids":[]}],"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":[]}