{"nhtsa_id":10117884,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-09-20","date":"2013-09-11","document_id":"TIBU728100","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL","mfr_system":null,"summary":"CT660 Instrument Gauge Cluster - Gauges, including speedometer, tachometer, transmission oil temperature, and others are reading erratically or having incorrect values. These gauges are all part of the primary cluster on the vocational truck. Many clusters are being returned NFF. A detailed description of the actual problem in SIMSi or the claim story is needed.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10117884-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10117884-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10117884","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"instrument-cluster","name":"Instrument cluster","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CATERPILLAR","model":"CT660","year_from":2012,"year_to":2017,"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":[]}