{"nhtsa_id":10090107,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-01","date":"2015-03-03","document_id":"15083","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ENGINE","mfr_system":null,"summary":"15083 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSTALL AN ENGINE VALVE STEM OIL SEAL ON CERTAIN VEHICLES EQUIPPED WITH A 5.3L ENGINE (RPO L83). THESE VEHICLES WERE INADVERTENTLY BUILT WITHOUT AN ENGINE VALVE STEM OIL SEAL. THE EFFECT OF THE CONDITION IS THAT ENGINE OIL MAY SEEP INTO THE CYLINDER AND RESULT IN PRE-MATURE ENGINE WEAR. IF UNCORRECTED THE CONDITION OVER TIME COULD LEAD TO NON-COMPLIANCE TO EMISSIONS STANDARDS.","document":null,"url":"https://open.wenmarpro.com/bulletins/10090107","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_chevrolet_silverado"]},{"make":"GMC","model":"TERRAIN","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_gmc_terrain"]}],"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":[]}