25-474
Service Campaign
It has been determined that certain models with underslung axles may have insufficient clearance between the axle beam and the holding tank located above the axle. The lack of clearance may cause damage to the holding tank.
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.
25-474
It has been determined that certain models with underslung axles may have insufficient clearance between the axle beam and the holding tank located above the axle. The lack of clearance may cause damage to the holding tank.
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.