{"nhtsa_id":634273,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-09-28","date":"2002-08-01","document_id":"020604043","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SUBJECT REGARDING REVISED DTC P0340 CAMSHAFT POSITION (CMP) SENSOR CIRCUIT DIAGNOSITC. NLM","document":null,"url":"https://open.wenmarpro.com/bulletins/634273","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0340"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"ASTRO","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SAFARI","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_gmc_safari"]}],"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":[]}