{"nhtsa_id":10018633,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2006-01-10","date":null,"document_id":"3766","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"TICKING NOISE FROM PURGE SOLENOID. ALSO NOISE ON THE HIGH VALUE V6 ENGINE, LIGHT TICKING OR THUMPING NOISE THAT COMES FROM THE PURGE VALVE SOLENOID AS IT IS OPERATING. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10018633","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"IMPALA (GMX 211)","year_from":2006,"year_to":2006,"match":"base","vehicle_ids":["2006_chevrolet_impala"]}],"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":[]}