# NHTSA Engineering Analysis EA89010
> **BRAKE INEFFECTIVENESS** · Opened 1989-01-17 · Closed 1990-05-08
## Investigation
- **Action number:** EA89010
- **Type:** Engineering Analysis
- **Open date:** 1989-01-17
- **Close date:** 1990-05-08
- **Manufacturer:** General Motors, LLC
- **Affected makes:** BUICK; CADILLAC; CHEVROLET; OLDSMOBILE; PONTIAC
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1987, 1988
- **Affected (make, year) variants:** 24
## Summary

There is no summary currently available

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA89010)
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