{"nhtsa_id":10083366,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-24","date":"2016-08-05","document_id":"PIT5518","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL","mfr_system":null,"summary":"THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES THE TECHNICIAN ABOUT VEHICLES WITH DIAGNOSTIC TROUBLE CODE P0602 SET IN THE CHASSIS CONTROL MODULE. TECHNICIAN WILL REMOVE FUSE 19 (F19UA) FROM THE UNDER HOOD FUSE BLOCK AND DISCARD. ON SOME VEHICLES WHEN AN AFTERMARKET OR GM ACCESSORY TRAILER BRAKE CONTROLLER IS INSTALLED, IT MAY BE NOTICED THAT THERE IS NO OUTPUT TO THE 7-WAY TRAILER CONNECTOR IN THE BUMPER FOR THE TRAILER BRAKES. AT THIS TIME TECHNICIAN WILL NEED TO FOLLOW THE LATEST VERSION OF PIT5282.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083366","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["P0602"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_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":[]}