{"nhtsa_id":10057993,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-07-22","date":"2015-06-01","document_id":"PIT5374A","mfr_campaign":null,"replaces":"PIT-5374-B","component":"EXTERIOR LIGHTING:HEADLIGHTS","mfr_system":null,"summary":"GENERAL MOTORS 2014-2015 GMC SIERRA, GMC SIERRA 1500: SOME VEHICLES ARE EXPERIENCING POOR HEADLIGHT PERFORMANCE WHEN DRIVING IN RURAL DARK AREAS. *LJ UPDATED 1/22/16. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10057993","components":[{"id":"lighting","name":"Lighting","parent":null},{"id":"headlight","name":"Headlights","parent":"lighting"}],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"SIERRA","year_from":2014,"year_to":2015,"match":"exact","vehicle_ids":["2014_gmc_sierra","2015_gmc_sierra"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2015,"match":"base","vehicle_ids":["2014_gmc_sierra","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":[]}