{"nhtsa_id":52571,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-08-21","date":"1997-06-01","document_id":"676537","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"INTERMITTENT HESTIATIONS, LOW POWER, AND ROUGH RUNNING ENGINE IN COLD TEMPERATURES (REPLACE PCM). *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/52571","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"ASTRO","year_from":1993,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"BLAZER","year_from":1993,"year_to":1995,"match":"exact","vehicle_ids":["1993_chevrolet_blazer","1994_chevrolet_blazer","1995_chevrolet_blazer"]},{"make":"CHEVROLET","model":"LUMINA APV","year_from":1993,"year_to":1995,"match":"exact","vehicle_ids":["1993_chevrolet_lumina-apv","1994_chevrolet_lumina-apv","1995_chevrolet_lumina-apv"]},{"make":"GMC","model":"JIMMY","year_from":1993,"year_to":1995,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SAFARI","year_from":1993,"year_to":1995,"match":"exact","vehicle_ids":["1993_gmc_safari","1994_gmc_safari","1995_gmc_safari"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":1993,"year_to":1994,"match":"exact","vehicle_ids":["1993_oldsmobile_bravada","1994_oldsmobile_bravada"]}],"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":[]}