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.
FSC 26-13-12544
Service Campaign
This applies to some GILLIG Allison eGen Flex Hybrids built between the years 2021 and 2024 using a speedometer that does not correctly accumulate odometer mileage when the vehicle is driving in electric only mode (engine not running).
FSC 24-13-6081
Service Campaign
Some Everett Gen2.5 BEBs require adding a suspension air solenoid valve, associated wiring controls and an updated I/O Program to enable Depot Charging to work properly.
000001084
Service Bulletin/Repair Instructions
Customers are being advised to purchase the low conductivity coolant used in Battery Electric Bus (BEB) Battery Thermal Management System (BTMS) directly from the manufacturer, Dynalene.
FSC22132479
Service Bulletin/Repair Instructions
Gen 2.0 and 2.5 BEB PTC compartment HV battery cables may have insufficient support bracketry that could allow a potential HVIL error fault.
FSC22182897
Service Bulletin/Repair Instructions
The CNG pontoon closeout bracket may experience fatigue failure and should be removed and replaced.
FSC 22-13-2529
Service Bulletin/Repair Instructions
GEN2 and GEN2.5 BEBs w/front charger has a possible rubbing concern with Power Steering