{"nhtsa_id":10085140,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-11-30","date":"2012-10-01","document_id":"100601008F","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPLACE THE AFM OIL DEFLECTOR, ROCKER ARM COVER AND CLEAN THE CARBON DEPOSITS FOR CONDITONS RELATED TO ENGINE OIL CONSUMPTION ON ALUMINUM BLOCK/IRON BLOCK ENGINES WITH ACTIVE FUEL MANAGEMENT","document":null,"url":"https://open.wenmarpro.com/bulletins/10085140","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"GENERAL MOTORS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}