{"nhtsa_id":635273,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-21","date":"2002-07-18","document_id":"4332","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SOME VEHICLES WITH THE AW55-50 GEARBOX MAY EXPERIENCE 2-3 UPSHIFT FLARE, SLIPPING, TACHOMETER NEEDLE JUMPING UP OR THE ENGINE RACING DURING A SHIFT. QUALITY UPGRADE HAS BEEN DEVELOPED TO MINIMIZE THIS CONDITION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/635273","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"VOLVO","model":"S60","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_volvo_s60"]},{"make":"VOLVO","model":"V70","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_volvo_v70"]},{"make":"VOLVO","model":"V70XC","year_from":2002,"year_to":2002,"match":"base","vehicle_ids":["2002_volvo_v70"]}],"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":[]}