{"nhtsa_id":10003821,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-11-04","date":"2003-08-18","document_id":"081803","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"HVAC BLOWER MOTOR FAN STICKS ON IN THE HIGH BLOWER MOTOR POSITION REGARDLESS OF WHICH POSITION THE FAN SELECTOR SWITCH IS SET ON 2004 FULL-SIZE PICK-UPS WITH THE MANUAL HVAC SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003821","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"GMC","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":[]}