{"nhtsa_id":615677,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-01-28","date":"2000-10-01","document_id":"SB0004C004","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"SOME VEHICLES MAY DISPLAY INACCURATE SPEEDOMETER READING. THIS BULLETIN REVEALS THE SPEEDOMETER CONTROL UNIT COVER REMOVAL PROCEDURES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615677","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ISUZU","model":"FRR","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_isuzu_frr"]}],"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":[]}