NHTSA investigationDP92005
Investigation DP92005: 1984–1991 Isuzu Trooper
- Status
- CLOSED
- Opened
- Mar 3, 1992
- Closed
- Jun 2, 1992
- Model years
- 1984–1991
Subject
Defective heater cores
Component: Visibility › Defroster/defogger/hvac system
Summary
Defective heater cores
An NHTSA investigation looks into whether a safety defect exists. Opening one is not a finding. Outcomes can include a recall, closure without action, or further inquiry.
Model years covered
- 1991 Isuzu Trooper57 complaints
- 1990 Isuzu Trooper23 complaints
- 1989 Isuzu Trooper16 complaints
- 1988 Isuzu Trooper17 complaints
- 1987 Isuzu Trooper6 complaints
- 1986 Isuzu Trooper18 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.