{"nhtsa_id":607584,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-09-29","date":"1999-08-01","document_id":"990421005","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT","mfr_system":null,"summary":"TRANSFER CASE VIBRATION (SHUDDER) DURING TIGHT TURNING MANEUVERS AT VEHICLE SPEEDS OF UP TO 5 KM/H (5 MPH) ON DRY PAVEMENT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/607584","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"L VAN","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"T UTILITY","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"L VAN","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"T UTILITY","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":1998,"year_to":1999,"match":"exact","vehicle_ids":["1998_oldsmobile_bravada","1999_oldsmobile_bravada"]}],"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":[]}