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).
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.
FSC 22-13-2529
Service Bulletin/Repair Instructions
GEN2 and GEN2.5 BEBs w/front charger has a possible rubbing concern with Power Steering
22-13-2008
Service Bulletin/Repair Instructions
Bus exhibits Fault Code indicating Charging issue. This issue may occur intermittently dependent on temperature in area of the voltage regulator