# NHTSA Defect Petition DP92005
> **DEFECTIVE HEATER CORES** · Opened 1992-03-03 · Closed 1992-06-02
## Investigation
- **Action number:** DP92005
- **Type:** Defect Petition
- **Open date:** 1992-03-03
- **Close date:** 1992-06-02
- **Manufacturer:** Isuzu Motors Limited
- **Affected makes:** ISUZU
- **Affected components:** VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
- **Affected model years:** 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991
- **Affected (make, year) variants:** 8
## Summary

DEFECTIVE HEATER CORES

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=DP92005)
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