# NHTSA Engineering Analysis EA96011
> **DYSFUNCTIONAL TURN SIGNAL ASSEMBL** · Opened 1996-06-18 · Closed 1999-11-23
## Investigation
- **Action number:** EA96011
- **Type:** Engineering Analysis
- **Open date:** 1996-06-18
- **Close date:** 1999-11-23
- **Manufacturer:** Mack Trucks, Inc.
- **Affected makes:** MACK
- **Affected components:** EXTERIOR LIGHTING
- **Affected model years:** 9999
- **Affected (make, year) variants:** 3
## Summary

Freightliner issued the a service bulletin outlining the repair/replacement concerning turn signal switch malfunctions.Which are produced by Grote Industries and sold to multiple heavy truck OEM's & aftermarket. there has been past recall on this type

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA96011)
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