{"vehicle":{"id":"2004_gmc_canyon","year":2004,"make":"GMC","model":"Canyon"},"code":"P0621","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":10009225,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-09-17","date":"2004-04-19","document_id":"04192004","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"SERVICE ENGINE SOON LAMP BEING ILLUMINATED. WITH DIAGNOSTIC TROUBLE CODES P0507, P0621 OR P0622. GM VOICEMAIL EXPRESS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009225"},{"nhtsa_id":10007762,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-07-10","date":"2004-01-01","document_id":"02065","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"DIAGNOSTIC TROUBLE CODE (DTC) P0621 AND/OR P0622. BATTERY CHARGE INDICATOR ILLUMINATED ON INSTRUMENT PANEL CLUSTER (IPC). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10007762"},{"nhtsa_id":10006710,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-05-11","date":"2004-01-01","document_id":"01787","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"BATTERY LIGHT AND OR MESSAGE ON DIC WITH OR WITHOUT P0621, P0622. *MR","document":null,"url":"https://open.wenmarpro.com/bulletins/10006710"}],"url":"https://open.wenmarpro.com/makes/gmc/canyon/2004/bulletins?code=P0621"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/gmc/canyon/2004/codes/P0621","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}