{"nhtsa_id":634557,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-03","date":"2002-05-01","document_id":"020867005","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:MECHANICAL:CARRIER/RACK","mfr_system":null,"summary":"SUBJECT REGARDING PROPER POSITION AND INSTALLATION OF ROOF RACK CROSS RAILS TO REDUCE WIND NOISE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634557","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_chevrolet_trailblazer"]},{"make":"GMC","model":"ENVOY","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_gmc_envoy"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_oldsmobile_bravada"]}],"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":[]}