{"nhtsa_id":39085,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-03-08","date":"1995-01-01","document_id":"476522","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"BACKFIRE ON ACCELERATION. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/39085","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"BLAZER","year_from":1994,"year_to":1994,"match":"exact","vehicle_ids":["1994_chevrolet_blazer"]},{"make":"CHEVROLET","model":"S10","year_from":1994,"year_to":1994,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"JIMMY","year_from":1994,"year_to":1994,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SONOMA","year_from":1994,"year_to":1994,"match":"exact","vehicle_ids":["1994_gmc_sonoma"]}],"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":[]}