What NHTSA investigated
Summary: the rear cylinder diameter was reduced for 1984 models to improvebraking balance for empty vehicles.gm claims rear brakes can be lockedon most empty pickups on low traction surfaces.analysis:pickup trucks traditionally have been designed with brakingsystems which caused the rear brakes to lock first when the cargo bed isempty, so that maximum effective braking is available when a load ispresent. Most modern light trucks and vans utilize weight sensitive prop-ortioning valves to provide good braking at all loads.status:c-memo may need revision.in final by 12/31/87.===
Vehicles covered
| Make | Model | Model years |
|---|---|---|
| Not recorded | Not recorded | Model year not recorded |
Source
From NHTSA’s investigation file, rebuilt daily. To report a problem with your own vehicle, go to nhtsa.gov/report-a-safety-problem. All open investigations.