{"nhtsa_id":10010676,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-12-06","date":"2004-06-01","document_id":"18WT04","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"REMOVAL OF GRIND OPERATION ON 3000 AND 4000 PRODUCT FAMILIES P1 RING GEARS. ALL ALLISON 3000 AND 4000 PRODUCT FAMILIES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10010676","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN","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":[]}