{"nhtsa_id":602772,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-01-13","date":"1998-09-01","document_id":"98764301","mfr_campaign":null,"replaces":"76-43-01","component":"POWER TRAIN:AXLE ASSEMBLY","mfr_system":null,"summary":"CONCERNS THAT THE COLDER THE OUTSIDE TEMPERATURE IS, THE LONGER IT TAKES FOR THE FRONT AXLE TO ENGAGE WHEN 4 WHEEL DRIVE IS SELECTED, OR THE FRONT AXLE DOES NOT ENGAGE. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602772","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"axle","name":"Axle","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":1997,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"K SERIES","year_from":1988,"year_to":1997,"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":[]}