{"nhtsa_id":10032749,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-05-07","date":"2009-12-01","document_id":"TB-9648","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AXLE ASSEMBLY","mfr_system":null,"summary":"MERITOR: INTER-AXLE DIFFERENTIAL (IAD), AND DRIVER CONTROLLED MAIN DIFFERENTIAL LOCK (DCDL). ALL MERITOR TANDEM DRIVE AXLES EQUIPPED WITH BOTH THE INTER AXLE DIFFERENTIAL (IAD), AND DRIVER CONTROLLED DIFFERENTIAL LOCK (DCDL). THE IAD LOCK MAY BE USED AT ALL SPEEDS AND FOR LONG TIME PERIODS DEPENDING ON BAD WEATHER CONDITIONS SUCH AS RAIN OR SNOW. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10032749","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"axle","name":"Axle","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"MERITOR","model":"MERITOR","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":[]}