{"nhtsa_id":621208,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-09-11","date":"2001-07-01","document_id":"010301","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT DRAIN FILTER LIGHT ILLUMINATION CAUSED BY A LEAK IN THE WATER-IN-FUEL SWITCH POTTING WHICH ALLOWS MOISTURE TO ENTER THE SWITCH FROM THE OUTSIDE AND ACTIVATE THE DRAIN FILTER LIGHT WHEN THERE IS NO WATER PRESENT IN THE FUEL. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621208","components":[],"codes":[],"topics":[],"vehicles":[{"make":"AM GENERAL","model":"HUMMER","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":[]}