{"nhtsa_id":629707,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-04-05","date":"2002-01-18","document_id":"180102","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"CUSTOMERS MAY COMMENT ABOUT SLIPPING ON THE 2-3 SHIFT OR NOT SHIFTING INTO THIRD GEAR AT ALL AND/OR LAUNCHES IN THIRD GEAR. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/629707","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"GMC","year_from":2001,"year_to":2002,"match":null,"vehicle_ids":[]}],"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":[]}