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.
REVO
Service Bulletin/Repair Instructions
On certain 2007 - 2017 model year REV Ambulance Group Orlando, Inc. ambulances equipped with web style Oxygen retention straps it has come to our attention that some end users may not be aware of the proper belt placement. Proper placement is essential to achieve appropriate vertical retention of the 02 bottle. Failure to restrain the compressed 02 air bottle vertically during a roll over event could cause a potential hazard.
072313
Service Bulletin/Repair Instructions
Wheeled Coach/Road Rescue is recommending that you inspect the vent hose at the fuel tank to verify that there is a quick connect fitting on the hose that connects to the tank.
06212013
Service Bulletin/Repair Instructions
Wheeled Coach/Road Rescue is recommending that you verify the lug size on the output cable of the secondary alternator for the below vehicles. The correct lug size should be ¼? and fit snugly around the alternator post.