{"nhtsa_id":628149,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-03-05","date":"2001-11-21","document_id":"211101","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"summary":"SOME VEHICLES AS WELL AS GMC SPORT UTILITIES AND PICK UPS AT VERY LOW MILEAGE, FROM AROUND ZERO TO 300 MILES OF FRONT DIFFERENTIAL FLUID LEAKING FROM THE FRONT AXLE VENT TUBE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/628149","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_cadillac_escalade"]},{"make":"GMC","model":"GMC","year_from":2002,"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":[]}