{"nhtsa_id":10114218,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-10-11","document_id":"G-176944","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"13330 - Service Update. This bulletin provides a service procedure to address incorrect calibration values in the Active Fuel Management (AFM) system. These calibration errors can cause the hydraulic lifters to actuate at the wrong time, when the combustion chamber is under high pressure. If this occurs the hydraulic lifter can be damaged and the affected cylinder will no longer operate. To correct this condition, dealers will reprogram these vehicles with a new ECM and TCM calibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114218-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114218-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10114218","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_gmc_sierra"]}],"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":[]}