{"nhtsa_id":635039,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-17","date":"2002-04-29","document_id":"0101502","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT INOPERATIVE OR INACCURATE SPEEDOMETER, 4X4 LAMP ILLUMINATION, AND / OR DIAGNOSTIC TROUBLE CODES P1635 AND / OR P1639, P0602 PRESENT AFTER POWER TRAIN CONTROL MODULE (PCM) OR INSTRUMENT CLUSTER REPLACEMENT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/635039","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0602","P1635","P1639"],"topics":[],"vehicles":[{"make":"MAZDA","model":"B-SERIES TRUCK","year_from":2001,"year_to":2002,"match":"base","vehicle_ids":["2001_mazda_b-series","2002_mazda_b-series"]},{"make":"MAZDA","model":"TRIBUTE","year_from":2001,"year_to":2002,"match":"exact","vehicle_ids":["2001_mazda_tribute","2002_mazda_tribute"]}],"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":[]}