{"nhtsa_id":620780,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-29","date":"2001-07-03","document_id":"MB221008","mfr_campaign":null,"replaces":null,"component":"VEHICLE SPEED CONTROL:CRUISE CONTROL","mfr_system":null,"summary":"INFORMATION ON SETTING IDLE SPEED ON VEHICLES EQUIPPED WITH AN ALLISON AUTOMATIC TRANSMISSION EXHIBITING A STALL CONDITION WHILE IDLING AT OPERATING TEMPERATURES WITH THE TRANSMISSION IN GEAR. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620780","components":[{"id":"speed-control","name":"Throttle and cruise control","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MS SERIES","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":[]}