NHTSA safety investigation
NHTSA Investigation EA88036
Engineering Analysis · General Motors, LLC · SERVICE BRAKES, HYDRAULIC
An investigation is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
REAR DISC BRAKES
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 investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- EA88036
- Investigation type
- Engineering Analysis (EA)
- Status
- Closed
- Manufacturer
- General Motors, LLC
- Component
- SERVICE BRAKES, HYDRAULIC
- Opened
- Jul 22, 1988
- Closed
- Aug 30, 1991
- Associated recall campaign
- None recorded
Vehicles named in this investigation
42 model years across 6 models
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.