{"nhtsa_id":10053869,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-11-29","date":"2013-09-01","document_id":"SB-13283","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"CHEVROLET: DUE TO CASTING ERROR, ON SOME VEHICLES, THE ENGINE ASSEMBLY NEEDS TO BE REPLACED BECAUSE OF INCORRECT DIMENSIONALLY PISTONS, WHICH CAUSES ENGINE NOISES, ROUGH RUNNING AND/OR BENT VALVES BETWEEN CYLINDER VALVES AND PISTONS. MODELS 2013-2014 MALIBU, IMPALA. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10053869","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"IMPALA","year_from":2013,"year_to":2014,"match":"exact","vehicle_ids":["2013_chevrolet_impala","2014_chevrolet_impala"]},{"make":"CHEVROLET","model":"MALIBU","year_from":2013,"year_to":2014,"match":"exact","vehicle_ids":["2013_chevrolet_malibu","2014_chevrolet_malibu"]}],"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":[]}