{"nhtsa_id":10092709,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-23","date":"2014-07-07","document_id":"G-195782","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"14231 - EMISSIONS RECALL. IMPCO AUTOMOTIVE IS CONDUCTING THIS EMISSION RECALL. FOR THE CONVENIENCE OF OUR CUSTOMERS, GENERAL MOTORS HAS AGREED TO ASSIST IN ADMINISTERING THIS RECALL THROUGH ITS CHEVROLET AND GMC DEALERS. IMPCO AUTOMOTIVE HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN VEHICLES EQUIPPED WITH A COMPRESSED NATURAL GAS (CNG) SYSTEM. THESE VEHICLES WERE BUILT WITH AN INCORRECT ECM CALIBRATION. DEALERS ARE TO REPROGRAM THE ENGINE CONTROL MODULE (ECM). THE CHANGE WILL ALLOW THE VEHICLE TO OPERATE AS ORIGINALLY DESIGNED.","document":null,"url":"https://open.wenmarpro.com/bulletins/10092709","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 3500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_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":[]}