{"nhtsa_id":10005554,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-03-03","date":"2005-09-01","document_id":"030310006","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"REFERENCE GUIDE FOR THE TECHNICIAN TO UPGRADE A VEHICLE FROM FACTORY WHEELS AND TIRES TO 20 INCH WHEELS AND TIRES, WHICH ARE AVAILABLE THROUGH GMSPO. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10005554","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":1999,"year_to":2006,"match":"exact","vehicle_ids":["1999_chevrolet_silverado","2000_chevrolet_silverado","2001_chevrolet_silverado","2002_chevrolet_silverado","2003_chevrolet_silverado","2004_chevrolet_silverado","2005_chevrolet_silverado","2006_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":1999,"year_to":2006,"match":"exact","vehicle_ids":["1999_gmc_sierra","2000_gmc_sierra","2001_gmc_sierra","2002_gmc_sierra","2003_gmc_sierra","2004_gmc_sierra","2005_gmc_sierra","2006_gmc_sierra"]}],"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":[]}