{"nhtsa_id":620319,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-02","date":"2001-04-01","document_id":"60101","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"INFORMATION ON INSTALLING NEW FRONT ISOLATORS, SHOCK ABSORBERS AND CAB AIR SPRINGS TO IMPROVE THE RIDE QUALITY ON CLASSIC XL VEHICLES EQUIPPED WITH SLEEPER CABS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620319","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"FLD","year_from":null,"year_to":null,"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":[]}