{"nhtsa_id":10057974,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-07-20","date":"2015-03-01","document_id":"14815A","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW","mfr_system":null,"summary":"THIS TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. GENERAL MOTORS 2015 CHEVROLET SILVERADO, SIERRA ; CERTAIN LIGHT DUTY 2015 VEHICLES BUILT WITH RPO C49 FIXED-WINDOW HEATED GLASS MAY HAVE A STRUCTURALLY WEAKENED GLASS DUE TO INTERNAL FLAW. *LJ","document":null,"url":"https://open.wenmarpro.com/bulletins/10057974","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2015,"year_to":2015,"match":"exact","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":[]}