{"nhtsa_id":10043829,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-04-28","date":"2012-03-01","document_id":"08-07-30-021G","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"GM: LOSS OF HIGH SPEED GMLAN COMMUNICATIONS, INTERMITTENT NO CRANK, IP GAGE FLUCTUATION, INTERMITTENT DOOR LOOK CYCLING, INTERMITTENT CHIME OPERATION, VARIOUS IP WARNING LAMPS ILLUMINATED, TRANSMISSION MAY NOT SHIFT, COMMUNICATION DTCS U0073, U0100, U0101, U0102 U0121 OR U0140 SET (REPAIR TERMINALS IN TRANSMISSION HARNESS CONNECTOR, REPAIR OPEN OR SHORTED GM HIGH SPEED LAN CIRCUITS, OPEN OR SHORTED DATA LINK RESISTOR, CORROSION OR POOR CONNECTIONS IN VARIOUS CONTROL MODULE CONNECTORS). *JS","document":null,"url":"https://open.wenmarpro.com/bulletins/10043829","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":["U0073","U0100","U0101","U0102","U0121","U0140"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2007,"year_to":2011,"match":"exact","vehicle_ids":["2007_cadillac_escalade","2008_cadillac_escalade","2009_cadillac_escalade","2010_cadillac_escalade","2011_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE HYBRID","year_from":2009,"year_to":2009,"match":"base","vehicle_ids":["2009_cadillac_escalade"]},{"make":"CADILLAC","model":"XLR","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_cadillac_xlr","2008_cadillac_xlr","2009_cadillac_xlr"]},{"make":"CHEVROLET","model":"AVALANCHE","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_avalanche","2008_chevrolet_avalanche","2009_chevrolet_avalanche","2010_chevrolet_avalanche","2011_chevrolet_avalanche","2012_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"CORVETTE","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_corvette","2008_chevrolet_corvette","2009_chevrolet_corvette","2010_chevrolet_corvette","2011_chevrolet_corvette","2012_chevrolet_corvette"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado","2009_chevrolet_silverado","2010_chevrolet_silverado","2011_chevrolet_silverado","2012_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO HYBRID","year_from":2009,"year_to":2009,"match":"base","vehicle_ids":["2009_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_suburban","2008_chevrolet_suburban","2009_chevrolet_suburban","2010_chevrolet_suburban","2011_chevrolet_suburban","2012_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_chevrolet_tahoe","2008_chevrolet_tahoe","2009_chevrolet_tahoe","2010_chevrolet_tahoe","2011_chevrolet_tahoe","2012_chevrolet_tahoe"]},{"make":"CHEVROLET","model":"TAHOE HYBRID","year_from":2008,"year_to":2009,"match":"base","vehicle_ids":["2008_chevrolet_tahoe","2009_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra","2009_gmc_sierra","2010_gmc_sierra","2011_gmc_sierra","2012_gmc_sierra"]},{"make":"GMC","model":"SIERRA HYBRID","year_from":2009,"year_to":2009,"match":"base","vehicle_ids":["2009_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2007,"year_to":2012,"match":"exact","vehicle_ids":["2007_gmc_yukon","2008_gmc_yukon","2009_gmc_yukon","2010_gmc_yukon","2011_gmc_yukon","2012_gmc_yukon"]},{"make":"GMC","model":"YUKON HYBRID","year_from":2008,"year_to":2009,"match":"base","vehicle_ids":["2008_gmc_yukon","2009_gmc_yukon"]},{"make":"HUMMER","model":"H2","year_from":2008,"year_to":2009,"match":"exact","vehicle_ids":["2008_hummer_h2","2009_hummer_h2"]}],"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":[]}