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NHTSA Engineering Analysis EA86033

Engineering Analysis · BRAKE FAILURE · Opened 1986-09-30 · Closed 1987-08-25

Investigation

Action number
EA86033
Type
Engineering Analysis
Open date
1986-09-30
Close date
1987-08-25
Manufacturer
General Motors, LLC
Affected makes
CHEVROLET; PONTIAC
Affected components
SERVICE BRAKES, HYDRAULIC
Affected model years
1979, 1980, 1981
Affected (make, year) variants
6

Summary

SUMMARY OF INFORMATION FROM MANUFACTURER:GM MAINTAINS THAT THERE IS NO DEFECT IN THE DESIGN.SPATIAL RELATIONSHIP DOES NOT CHANGE WITH APPLICATION OF PEDAL FORCE.GM BELIEVES THAT THEIR TEST DATA DEMONSTRATES THAT PEDAL, BRACKET, AND FIREWALL ARE SUFFICIENTLY STOUT.GM REPORTSNO FIELD COMPLAINTS ON THIS ALLEGED DEFECT. ANALYSIS:THIS ALLEGED DEFECT WAS REPORTED IN A BENDIX TRADE PUBLICATION. IT CITED FIREWALL FLEXING AS REDUCING THE PEDAL FREE PLAY AND PREVENTINGTHE MASTER CYLINDER FROM COMPENSATING NORMALLY.STATUS:ON DEC 11,1986, A MEMO WAS SENT TO VRTC REQUESTING TESTING ON A VEHICLE IN ORDER TO EVALUATE THE ALLEGED DEFECT.VRTC HAS PURCHASED A TEST VEHICLE AND TESTING HAS BEEN COMPLETED.DRAFT REPORT IN REVIEW CYCLE. PROPOSED ACTION:CLOSED AUG 25,1987===

Source

Authoritative
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