{"nhtsa_id":10057635,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-06-16","date":"2015-03-01","document_id":"14308A","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION:LUBRICANT","mfr_system":null,"summary":"GENERAL MOTORS 2008 CHEVROLET SILVERADO HD DIESEL: TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. GMC SIERRA HD DIESEL: EQUIPPED WITH ALLISON 6 SPEED AUTOMATIC TRANSMISSION. TRANSMISSION OIL COOLER LINE FLUID LEAK. *LJ","document":null,"url":"https://open.wenmarpro.com/bulletins/10057635","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2008,"year_to":2008,"match":"exact","vehicle_ids":["2008_chevrolet_silverado"]}],"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":[]}