{"nhtsa_id":10163849,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-08-19","date":"2019-07-18","document_id":"N192219160","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"N192219160 - Service Update - Certain 2019 Chevrolet Silverado 4500/5500/6500 vehicles may have been built with a rear axle housing breather improperly installed. If the rear axle housing breather were loose or missing, a customer could see rear diff. fluid on the ground. If the leak were ignored, a grinding noise could occur and continued use of the vehicle may result in the rear differential seizing. Verify rear axle housing breather is installed/oriented correctly. If not, drain and refill rear differential to eliminate any possible contamination and install new rear axle housing breather.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10163849-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10163849-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10163849","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 4500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 6500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_chevrolet_silverado"]},{"make":"CHEVROLET","model":"duplicate SILVERADO 5500","year_from":2019,"year_to":2019,"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":[]}