Investigation EA88036: 1982–1988 Buick Riviera

Status

CLOSED

Opened

Jul 22, 1988

Closed

Aug 30, 1991

Model years

1982–1988

Subject

Rear disc brakes

Component: Service brakes, hydraulic

Summary

Summary: corrosion in the rear brake caliper prevents automatic adjustment for pad wear. This may eventually cause loss of rear service brake and parking brake. Gm has added corrosion protection and changed spring rate to correct problem. Same basic design used on all models identified.

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.

Model years covered

• 1987 Buick Riviera5 complaints