{"nhtsa_id":10007734,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-07-09","date":"2004-01-01","document_id":"02048","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:DIESEL","mfr_system":null,"summary":"LOSS OF OIL FROM AROUND THE OIL DIPSTICK TUBE DURING EXTENSIVE DRIVING IN EXTREME LOW AMBIENT TEMPERATURES. ALL 2003-2004 GMC, CHEVROLET C/T 65-75-85 AND ISUZU F 65-75-85 MEDIUM DUTY TRUCK MODELS EQUIPPED WITH THE 7.8L OPTION GL4 DIESEL ENGINE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10007734","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN1","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":[]}