{"nhtsa_id":39040,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-03-01","date":"1995-01-01","document_id":"PIL023R","mfr_campaign":null,"replaces":"PIL023","component":"POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES","mfr_system":null,"summary":"OIL COOLER CORE CHANGE FOR ALLISON AUTOMATIC TRANSMISSIONS. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/39040","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"UD","model":"UD1800","year_from":1992,"year_to":1994,"match":"exact","vehicle_ids":["1992_ud_ud1800","1993_ud_ud1800","1994_ud_ud1800"]}],"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":[]}