{"nhtsa_id":10114188,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-07-24","document_id":"G-171474","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; STEERING","mfr_system":null,"summary":"13240 - Service Update. Reprogram the power steering control module. The power steering control module may disable the power steering assist feature. This is most likely to occur when the vehicle is first started and when the underhood temperature is extremely low, although in very rare instances, it may occur if the underhood temperature is extremely high. This could result in increased steering effort at low vehicle speeds, the display of a Service Power Steering DIC message, and the setting of DTC C056D. Power steering assist will return on subsequent ignition cycles if the underhood temperatures are no longer in these ranges.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114188-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10114188-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10114188","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"steering","name":"Steering","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["C056D"],"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":[]}