# NHTSA Defect Petition DP94004
> **BRAKE CALIPER CORROSION** · Opened 1994-06-20 · Closed 1994-08-17
## Investigation
- **Action number:** DP94004
- **Type:** Defect Petition
- **Open date:** 1994-06-20
- **Close date:** 1994-08-17
- **Manufacturer:** General Motors, LLC
- **Affected makes:** BUICK; CHEVROLET; OLDSMOBILE; PONTIAC
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1988, 1989, 1990, 1991, 1992, 1993
- **Affected (make, year) variants:** 24
## Summary

BRAKE CALIPER CORROSION

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=DP94004)
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