{"nhtsa_id":10112994,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-04-22","document_id":"PIP5012C","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles that have a clunk noise or a harsh 6-5 downshift while driving at 50 to 70 miles per hour. Technician will reprogrammed the Transmission Control Module and a FastLearn procedure will need to be performed to correct the condition.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10112994-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10112994-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112994","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_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":[]}