{"nhtsa_id":10047319,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-11-26","date":"2012-09-01","document_id":"PI-0803","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE","mfr_system":null,"summary":"CHEVROLET/GMC: THE ENGINE, WHILE DRIVING UP AN INCLINE, WITH A LOAD, AT 1350 RPM, WOULD EXPERIENCE AN EXHAUST RESONANCE VIBRATION, OR DRONING OR BUZZING TYPE NOISE, IN A HIGHER GEAR UNDER A LOAD CAUSING PULSING/FIRING THROUGH DRIVELINE. MODELS 2011 SILVERADO 2500/3500 HD; SIERRA 2500/3500 HD. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10047319","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 2500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_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":[]}