{"nhtsa_id":10137424,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-05-21","date":"2018-03-28","document_id":"18NA092","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:WIRING","mfr_system":null,"summary":"This technical bulletin provides a procedure to repair a bad terminal and re-route the harness to prevent the future event of Radio Audio Randomly Cuts Out DTC U18B4 - Lost Communication with Radio on Ethernet Bus from happening again.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10137424-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10137424-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10137424","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"wiring","name":"Wiring and fuses","parent":"electrical"}],"codes":["U18B4"],"topics":[],"vehicles":[{"make":"GMC","model":"TERRAIN","year_from":2018,"year_to":2018,"match":"exact","vehicle_ids":["2018_gmc_terrain"]}],"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":[]}