{"nhtsa_id":634991,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-11","date":"2002-05-01","document_id":"000601013A","mfr_campaign":null,"replaces":"000601013","component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"INFORMATION PERTAINING TO THE RELEASE OF THE EXHAUST MANIFOLD / TURBOCHARGER HEAT SHIELD. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634991","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"C6500","year_from":1998,"year_to":2002,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"C7500","year_from":1998,"year_to":2002,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"C6500","year_from":1998,"year_to":2002,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"C7500","year_from":1998,"year_to":2002,"match":null,"vehicle_ids":[]}],"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":[]}