{"nhtsa_id":10115035,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2015-06-11","document_id":"PIT5432","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles that have a Shudder, bounce, bucking from the rear of the truck while braking when towing a gooseneck or fifth wheel trailer. Technician will need to measure the actual truck and trailer weights, with the trailer loaded to the point that exhibits the condition. If any weight parameter is exceeded such as the Front Gross Axle Weight Rating, Rear Gross Axle Weight Rating, Gross Vehicle Weight Rating, or Gross Combined Weight Rating the load must be reduced before investigating further. If evaluation of the trailer?s brakes indicates trailer brake capability is adequate, adjust brake controller per the Trailer Gain Adjustment Procedure described in the Driving and Operating section of the Owner?s Manual and evaluate truck and trailer combination for braking shudder.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10115035-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10115035-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10115035","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2011,"year_to":2015,"match":"base","vehicle_ids":["2011_chevrolet_silverado","2012_chevrolet_silverado","2013_chevrolet_silverado","2014_chevrolet_silverado","2015_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2013,"year_to":2013,"match":"base","vehicle_ids":["2013_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2011,"year_to":2015,"match":"base","vehicle_ids":["2011_gmc_sierra","2012_gmc_sierra","2013_gmc_sierra","2014_gmc_sierra","2015_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2011,"year_to":2013,"match":"base","vehicle_ids":["2011_gmc_sierra","2012_gmc_sierra","2013_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_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":[]}