# NHTSA Engineering Analysis EA91039
> **TRANSMISSION LOCK-UP** · Opened 1991-09-24 · Closed 1992-10-13
## Investigation
- **Action number:** EA91039
- **Type:** Engineering Analysis
- **Open date:** 1991-09-24
- **Close date:** 1992-10-13
- **Manufacturer:** Hyundai Motor America
- **Affected makes:** HYUNDAI
- **Affected components:** POWER TRAIN
- **Affected model years:** 1986, 1987, 1988, 1989, 1990, 1991
- **Affected (make, year) variants:** 6
## 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=EA91039)
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