{"nhtsa_id":620572,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-14","date":"2001-04-10","document_id":"MB700003","mfr_campaign":null,"replaces":"MB700003","component":"ELECTRICAL SYSTEM:WIRING","mfr_system":null,"summary":"THIS BULLETIN HAS BEEN REISSUED BECAUSE THE WIRING DIAGRAM WAS CHANGED TO MAKE THE HEATER BLOWER MOTOR CIRCUIT EASIER TO UNDERSTAND, AND TO ELIMINATE THE TWO BLOWER MOTOR RELAYS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620572","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"wiring","name":"Wiring and fuses","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CS SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"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":[]}