NHTSA investigationDP78009
Investigation DP78009: Vehicles
- Status
- CLOSED
- Opened
- Dec 2, 1977
- Closed
- Apr 21, 1978
- Model years
- —
Subject
121 braking system, all wheel lock down
Summary
121 braking system, all wheel lock down
An NHTSA investigation looks into whether a safety defect exists. Opening one is not a finding. Outcomes can include a recall, closure without action, or further inquiry.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.