{"nhtsa_id":621770,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-10-01","date":"2001-04-01","document_id":"010901","mfr_campaign":null,"replaces":null,"component":"WHEELS:HUBCAP/COVER","mfr_system":null,"summary":"SUBJECT REGARDING GEARED HUB SPINDLE AND SPACER DESIGN CHANGE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621770","components":[{"id":"wheels","name":"Wheels","parent":null}],"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":[]}