{"nhtsa_id":10038751,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2011-06-27","date":"2015-08-01","document_id":"PIP-4891-C","mfr_campaign":null,"replaces":"PIP-4891-G","component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"GM: SERVICE ENGINE SOON LIGHT IS ON WITH A TROUBLE CODE STORED. IT IS LIKELY CAUSED FROM OVERFILLING THE ENGINE AND A LARGE TEMPERATURE CHANGE. 2011 VOLT. *RM UPDATED ON 5/2/2012. *KB UPDATED 2/1/16. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10038751","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"VOLT","year_from":2011,"year_to":2012,"match":"exact","vehicle_ids":["2011_chevrolet_volt","2012_chevrolet_volt"]}],"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":[]}