{"nhtsa_id":602827,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-01-13","date":"1998-09-01","document_id":"767402","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"COMPLAINTS THAT FOUR WHEEL DRIVE DOES NOT ENGAGE AFTER INSTALLATION OF THE UPDATED FOUR WHEEL DRIVE FAST ACTUATOR. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602827","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"K SERIES","year_from":1988,"year_to":1993,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"K SERIES","year_from":1995,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"K SERIES","year_from":1988,"year_to":1998,"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":[]}