# NHTSA Preliminary Evaluation PE98023
> **DEGRADED BRAKING PERFORMANCE** · Opened 1998-04-23 · Closed 1998-08-31
## Investigation
- **Action number:** PE98023
- **Type:** Preliminary Evaluation
- **Open date:** 1998-04-23
- **Close date:** 1998-08-31
- **Manufacturer:** General Motors, LLC
- **Affected makes:** CHEVROLET
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1996, 1997
- **Affected (make, year) variants:** 2
## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE98023)
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