{"nhtsa_id":10015784,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-08-12","date":"2004-12-01","document_id":"612","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC","mfr_system":null,"summary":"SERVICE ENGINE SOON LIGHT ILLUMINATED. DIAGNOSTIC TROUBLE CODE (DTC) P0171 AND/OR P0174 (LEAN FUEL TRIM) MAY BE SET. MASTER CYLINDER O-RING DAMAGED. GM TECH LINK. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10015784","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":["P0171","P0174"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2005,"year_to":2005,"match":"exact","vehicle_ids":["2005_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2005,"year_to":2005,"match":"exact","vehicle_ids":["2005_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":[]}