{"nhtsa_id":607353,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-09-21","date":"1999-05-14","document_id":"99111","mfr_campaign":null,"replaces":null,"component":"STRUCTURE","mfr_system":null,"summary":"ACTION RETURN BULLETIN REGARDING SPECIAL RETURN OF THE STEP PACKAGE, SIDE ASSIST. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/607353","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"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":[]}