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.
511640B
Service Bulletin/Repair Instructions
According to General Motors Recall 23V247: "These vehicles are equipped with an unused circuit that a final-stage manufacturer may elect to use to install an optional rear HVAC system. If the final-stage manufacturer leaves the circuit's connectors or cut wires unsealed, exposure to moisture or contamination may, over time, cause corrosion. This could result in high current draw through the circuit at the vehicles' lower left side B-pillar. Unintended release of excessive heat from the circuit may pose a risk of a vehicle fire and increase the risk of injury."
2019-0034
Service Bulletin/Repair Instructions
To repair crack in exterior sheetmetal skin of chassis cab.
2017-0018
Service Bulletin/Repair Instructions
This is a Service Bulletin to repair water leaks at the wheelchair door and repair cracks in the wheelchair door frame.
2016-0001
Service Bulletin/Repair Instructions
THIS TSB OUTLINES THE PROCEDURE TO REPAIR THE F550 DRIVER SIDE A-PILLAR. REPAIR PROCEDURE PROVIDES INSTRUCTION FOR; 1. THE ADDITION OF A PLATE IN THE FRONT CAP; 2. THE REPAIR OF A SHEET METAL CRACK IN THE OEM CHASSIS OUTER SKIN.
2016-0001_F550 A
Service Bulletin/Repair Instructions
Steel Plate Installation/Cab Crack Repair. If there is cracking in the A-pillar area of the OEM cab sheet steel and the steel reinforcement plate is being added follow the steps below.
2016-0002
Service Bulletin/Repair Instructions
THIS TSB OUTLINES THE PROCEDURE TO REPAIR THE F550 B-PILLAR DUE TO A CRACK IN THE OEM EXTERIOR SHEETMETAL.
2011-0303_V1
Service Bulletin/Repair Instructions
THIS TECHNICAL SERVICE BULLETIN (TSB) OUTLINES THE REPAIR/REPLACEMENT OF THE ROOF INTERIOR PLY-LAYER OF VERTICEL MATERIAL DUE TO WATER LEAKS, AND THE VERTICELL PLY-LAYER BECOMES DAMAGED. THIS TECHNICAL SERVICE BULLETIN (TSB) OUTLINES THE REPAIR/REPLACEMENT OF THE ROOF INTERIOR PLY-LAYER OF VERTICEL MATERIAL DUE TO WATER LEAKS, AND THE VERTICELL PLY-LAYER BECOMES DAMAGED.