# NHTSA SQ SQ97019
> **HEATER COOLANT LEAK** · Opened 1997-10-06 · Closed 1998-04-08
## Investigation
- **Action number:** SQ97019
- **Type:** SQ
- **Open date:** 1997-10-06
- **Close date:** 1998-04-08
- **Manufacturer:** VEHICLE SYSTEMS, INC.
- **Affected makes:** VEHICLE SYSTEM INC
- **Affected components:** VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
- **Affected model years:** 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
- **Affected (make, year) variants:** 8
## Summary

SEE CLOSING RESUME

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=SQ97019)
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