{"nhtsa_id":11028050,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-03","date":"2026-01-21","document_id":"CBR 2548-1 202601","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"CBR - Shock Interference With “Z” Springs.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028050-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028050-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028050","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"PIONEER PR (4)","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_mack_pioneer","2026_mack_pioneer"]}],"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":[]}