{"nhtsa_id":10172590,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-03-23","date":"2020-03-18","document_id":"CALFTL32-003","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"Customer Advisory Letter for Airliner 21K Lightweight Extra Duty Rear Suspension Height Control Valve Installation. The rear suspension height control valve and linkage installation on these 15 vehicles will need to be corrected using the following work instructions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172590-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172590-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10172590","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"BUSINESS CLASS M2","year_from":2021,"year_to":2021,"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":[]}