# NHTSA Preliminary Evaluation PE89114
> **BRAKE LEAD** · Opened 1989-04-12 · Closed 1989-09-19
## Investigation
- **Action number:** PE89114
- **Type:** Preliminary Evaluation
- **Open date:** 1989-04-12
- **Close date:** 1989-09-19
- **Manufacturer:** General Motors, LLC
- **Affected makes:** CHEVROLET; GMC
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1984, 1985, 1986, 1987, 1988
- **Affected (make, year) variants:** 80
## Summary

SUMMARY:GM ISSUED TWO SERVICE BULLETINS PERTAINING TO BRAKE LEAD.THEBULLETINS ADDRESS THE PROBLEM BY INSPECTION AND ADJUSTMENT OF BRAKES ANDINSPECTION AND MODIFICATION OF THE FRONT SUSPENSION.ADDITIONALLY, ANINSPECTION PROCEDURE FOR IDENTIFYING A MISLOCATED ORIFICE HOLE IN ACALIPER BRAKE LINE BOLT IS DESCRIBED.===

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE89114)
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