{"nhtsa_id":10025668,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2008-08-28","date":"2010-06-01","document_id":"SB-08-07-30-021","mfr_campaign":null,"replaces":"SB-08-07-30-021E","component":"LATCHES/LOCKS/LINKAGES:DOORS:LATCH; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"LOSS OF HIGH SPEED GMLAN COMMUNICATIONS, INTERMITTENT NO CRANK, IPC GAUGE FLUCTUATION, INTERMITTENT DOOR LOCK CYCLING, TRANSMISSION MAY NOT SHIFT, DTCS U0073, U0100, U0101, U0102, U0121, U0140 SET (REPAIR BACKED OUT TERMINAL IN TRANSMISSION HARNESS CONNECTOR). VEHICLES WITH 6 SPEED 6L80 (RPO MYC), 6L90 (RPO MYD) OR HYBRID TWO MODE 2M70 AUTOMATIC. INCLUDING 2008 TAHOE AND YUKON HYBRID MODELS. *PE UPDATED 3/28/11. INCLUDING SIERRA, SILVERADO AND ESCALADE HYBRIDS. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10025668","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"latches-locks","name":"Latches and locks","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"door-latch","name":"Door latch","parent":"latches-locks"},{"id":"instrument-cluster","name":"Instrument cluster","parent":"electrical"},{"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":2008,"match":"exact","vehicle_ids":["2007_cadillac_escalade","2008_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_cadillac_escalade","2008_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE EXT","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_cadillac_escalade","2008_cadillac_escalade"]},{"make":"CADILLAC","model":"XLR","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_cadillac_xlr","2008_cadillac_xlr"]},{"make":"CHEVROLET","model":"CORVETTE","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_corvette","2008_chevrolet_corvette"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_suburban","2008_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_tahoe","2008_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_yukon","2008_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_gmc_yukon","2008_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI XL","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_gmc_yukon","2008_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_yukon-xl","2008_gmc_yukon-xl"]},{"make":"GMC","model":"YUKON XL 1500","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_gmc_yukon-xl","2008_gmc_yukon-xl"]},{"make":"GMC","model":"YUKON XL 2500","year_from":2007,"year_to":2008,"match":"base","vehicle_ids":["2007_gmc_yukon-xl","2008_gmc_yukon-xl"]}],"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":[]}