{"nhtsa_id":10114228,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-11-12","document_id":"G-178586","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"13346 - Service Update. Inspect the transfer case adapter housing for two specific build codes. If the housing has one of the two codes, dealers are to test drive the vehicle and, if necessary, install a new transfer case adapter housing. The front and rear machined surfaces of the transfer case adapter housing on these vehicles may not be parallel to each other. This could cause harsh downshifts, a \"bump\" feeling when coasting, or a grinding noise on deceleration. These conditions may be more noticeable in the tow/haul mode and when using engine braking without using the service brakes.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114228-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114228-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10114228","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2013,"year_to":2013,"match":"base","vehicle_ids":["2013_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 3500","year_from":2013,"year_to":2013,"match":"base","vehicle_ids":["2013_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":[]}