{"nhtsa_id":620808,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-30","date":"2001-07-01","document_id":"010601018","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME OWNERS MAY COMMENT ON A TICKING NOISE IN THEUPPER END OF THE ENGINE. THE NOISE IS CONSTANT AND DOES NOT VARY WITH ENGINE RPM. A LOSS OF POWER MAY BE NOTICED. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620808","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"B7","year_from":2001,"year_to":2001,"match":"exact","vehicle_ids":["2001_chevrolet_b7"]},{"make":"CHEVROLET","model":"C6500","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"C7500","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"G SERIES","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2001,"year_to":2001,"match":"base","vehicle_ids":["2001_chevrolet_silverado"]},{"make":"GMC","model":"B7","year_from":2001,"year_to":2001,"match":"exact","vehicle_ids":["2001_gmc_b7"]},{"make":"GMC","model":"C6500","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"C7500","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"G SERIES","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SIERRA 1500","year_from":2001,"year_to":2001,"match":"base","vehicle_ids":["2001_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":[]}