{"nhtsa_id":10154939,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-03-18","date":"2019-02-14","document_id":"SB-18-74","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"Technical Service Bulletin Front Axle Control Arm Retrofit (RL75EC to RL82EC) was issued to replace the Control Arms on the front axle to allow a higher front axle weight.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154939-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154939-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10154939","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PROTERRA","model":"CATALYST","year_from":2015,"year_to":2018,"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":[]}