{"nhtsa_id":10112158,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2014-08-07","document_id":"PIT5311","mfr_campaign":null,"replaces":null,"component":"TRAILER HITCHES; ELECTRICAL SYSTEM:WIRING","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent \"Check Trailer Wiring\" or \"Service Trailer Brake\" message on the Driver Information Center. Technician may find Diagnostic Trouble Code C1114. Technician will inspect and clean the ground wire (normally white wire) connection on the trailer side of the 7-pin connector. Inspect that the wires inside the trailer side connector are clean and securely fastened. If the vehicle's 7-way connector socket terminals are deformed or have excessive wear, it will be necessary to replace the truck side connector from General Motors Customer Care and Aftersales along with the trailer's 7-way connector plug.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10112158-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10112158-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112158","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"trailer-hitch","name":"Trailer hitch","parent":null},{"id":"wiring","name":"Wiring and fuses","parent":"electrical"}],"codes":["C1114"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_gmc_sierra"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_gmc_yukon-xl"]}],"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":[]}