{"nhtsa_id":10187921,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-03","date":"2021-02-02","document_id":"SSM 49536","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Some 2017-2021 Ford GT vehicles may exhibit a runs rough or hard start with or without an illuminated MIL with DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306 and/or P0316. Prior to performing any diagnostics, determine if the vehicle operating conditions may have resulted in multiple cold engine start-ups without allowing the engine to reach normal operating temperature and being driven. If that operating condition is determined, inspect the spark plugs per Workshop Manual (WSM), Section 303-00 and repair as directed. If no concern with spark plugs are found, proceed with normal diagnostics per the Powertrain Controls/Emission Diagnosis (PC/ED) Manual. Upon returning the vehicle, refer the customer to the owners guide regarding proper driving cycles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187921-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187921-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187921","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0300","P0301","P0302","P0303","P0304","P0305","P0306","P0316"],"topics":[],"vehicles":[{"make":"FORD","model":"GT","year_from":2017,"year_to":2018,"match":"exact","vehicle_ids":["2017_ford_gt","2018_ford_gt"]}],"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":[]}