{"nhtsa_id":627861,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-02-25","date":"2005-01-01","document_id":"010417004A","mfr_campaign":null,"replaces":"010417004B","component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"CLUNK, BUMP OR SQUAWK WHEN VEHICLE COMES TO A COMPLETE STOP OR ACCELERATION FROM COMPLETE STOP. *YH UPDATE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/627861","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":1999,"year_to":2002,"match":"exact","vehicle_ids":["1999_chevrolet_silverado","2000_chevrolet_silverado","2001_chevrolet_silverado","2002_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":1999,"year_to":2002,"match":"exact","vehicle_ids":["1999_gmc_sierra","2000_gmc_sierra","2001_gmc_sierra","2002_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":[]}