Investigations
BRAKE BACKING PLATE
NHTSA Engineering Analysis EA86006 - closed, opened 1985-11-27.
NHTSA investigation EA86006 is a Engineering Analysis opened on 1985-11-27 and currently closed. The subject is tracked inside the Office of Defects Investigation queue. Latest activity on this investigation was logged on 1988-11-28 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
An Engineering Analysis like EA86006 is the deeper technical phase that follows a PE. NHTSA requests design, warranty, and field-failure data from the manufacturer, conducts its own testing when needed, and determines whether the evidence supports a safety defect finding that would compel a recall.
Investigators summarized the matter as follows: "SUMMARY: GM IS CONDUCTING A VOLUNTARY RECALL CAMPAIGN (85V-048)INVOLVING 2,136,826 VEHICLES. THE RECALL IS LIMITED TO VEHICLES BUILT ATCERTAIN ASSEMBLY PLANTS WHICH, ACCORDING TO GM, OVERTORQUED THE BRAKEPIPE NUT,THEREBY..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time.
Investigation Summary
SUMMARY: GM IS CONDUCTING A VOLUNTARY RECALL CAMPAIGN (85V-048)INVOLVING 2,136,826 VEHICLES. THE RECALL IS LIMITED TO VEHICLES BUILT ATCERTAIN ASSEMBLY PLANTS WHICH, ACCORDING TO GM, OVERTORQUED THE BRAKEPIPE NUT,THEREBY OVERSTRESSING THE WHEEL CYLINDER SUPPORT AREA OF THEBACKING PLATE.ANALYSIS: FRONT BRAKES PROVIDE SUFFICIENT BRAKING FOR PASSENGER CARSIN MOST NON-EMERGENCY SITUATIONS. ALL AFFECTED TRUCKS ARE INCLUDED INTHE CURRENT RECALL. IN MOST CASES THE PROBLEM IS DISCOVERED DURING BRAKEMAINTENANCE. THE RECALL APPEARS TO COVER THOSE GROUPS OF CARS WITH THEHIGHEST FAILURE RATES.STATUS: ANALYZING GM IR RESPONSE AND NEW COMPLAINT DATA. DRAFT CLOSINGREPORT BY 5/15/88.===
About This Investigation Type
An Engineering Analysis (EA) is the in-depth phase following a Preliminary Evaluation. NHTSA engineers conduct testing, collect data from manufacturers, and perform detailed technical analysis to determine whether a safety defect exists. An EA may lead to a voluntary recall by the manufacturer or, in rare cases, a mandatory recall order.
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.