Vehicle report
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.
SIL-3227
Altec has learned that the trailer wiring harness on certain Freightliner chassis with Altec forestry bodies manufactured from July 2021 to February 2025 supplies constant voltage to the trailer brakes, causing the trailer brakes to always be engaged.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.