{"nhtsa_id":51348,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-06-27","date":"1997-02-01","document_id":"4619","mfr_campaign":null,"replaces":null,"component":"STEERING: STEERING WHEEL/HANDLE BAR","mfr_system":null,"summary":"SOME CENTURY CLASS VEHICLES MAY MAKE A POPPING OR THUMPING NOISE DURING LOW SPEED/SHARP-TURN MANEUVERS- THE NOISE MAY OCCUR UNDER THESE CONDITIONS BECAUSE THE SLIP SPLINE OF THE STEERING INTERMEDIATE SHAFT WILL STICK, THEN SLIDE PRODUCING THE POPPING OR THUMPING NOISE. JD","document":null,"url":"https://open.wenmarpro.com/bulletins/51348","components":[{"id":"steering","name":"Steering","parent":null},{"id":"steering-column","name":"Steering column and wheel","parent":"steering"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"CENTURY","year_from":1997,"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":[]}