Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
167-T2606-1
Service Bulletin/Repair Instructions
TT-26-003 COE HV Battery Thermistor DTC P3001 - TC43 When servicing a COE Hybrid with the HV light on and code P3001 - TC43 set. Diagnosis has led to replacing the Battery ECU and/or the HV Battery. We have found that replacing the HV Battery Thermistor has resolved this concern in most cases. Certain 13MY – 20MY Hybrid Cab-Over equipped with a J05
167-T2406-1
Service Bulletin/Repair Instructions
After connecting to a truck using DX3, it may be necessary to review or create a DX Diagnostic Report for review.
167-T2406-2
Service Bulletin/Repair Instructions
This article will provide dealership technicians with information on how to open a tech assist case and discuss what is required when opening a Tech Assist Case.