{"nhtsa_id":10009378,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-09-27","date":null,"document_id":"3041","mfr_campaign":null,"replaces":"3041A","component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SERVICE ENGINE SOON LIGHT AND / OR REDUCED ENGINE POWER MODE DUE TO DIAGNOSTIC TROUBLE CODES P0120, P0220, P1516 AND/OR P1518. THIS CONDITION IS NORMALLY VERY INTERMITTENT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009378","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0120","P0220","P1516","P1518"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_trailblazer"]},{"make":"GMC","model":"ENVOY","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_gmc_envoy"]}],"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":[]}