Problems owners report
Complaints filed with NHTSA about the 1991 Isuzu Trooper, by the system named in each complaint. One complaint can name several.
- Engine and engine cooling13
- Power train12
- Wheels8
- Electrical system7
- Fuel system, gasoline6
- Vehicle speed control5
- Tires4
- Service brakes, hydraulic3
- Seat belts2
- Structure2
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 4 injuries and 3 deaths reported
Compared with other years
NHTSA ODI complaints by model year
In the United Kingdom
11 cars built in 1991 were licensed for the road at the end of 2025, and 120 more were declared off the road (SORN).
Department for Transport and DVLA, vehicle licensing statistics (table VEH0124, year of manufacture) · Open Government Licence v3.0
In New Zealand
6 1991 cars are on the New Zealand register; 17% arrived as used imports, 83% were sold new in New Zealand.
NZ Transport Agency Waka Kotahi, Motor Vehicle Register (March 2026) · CC BY 4.0
Recalls in Canada
1 Transport Canada recall for the 1991 Isuzu Trooper.
| 1993133 22 Sept 1993 | Powertrain NOTE: VEHICLES EQUIPPED WITH V6 ENGINE AND AUTOMATIC TRANSMISSION. THE AUTOMATIC TRANSMISSION DIPSTICK MUST BE PROPERLY REINSTALLED AFTER CHECKING THE FLUID LE… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
IMPROPERLY INSTALLED HOSE ON THE OIL COOLER COULD COME IN CONTACT WITH THE EXHAUST MANIFOLD AND COULD MELT.
PUTTING IN MORE TRANSMISSION OIL THAN SPECIFIED CAN CAUSE OIL TO BLEED THROUGH AIR GROOVE ON TO THE EXHAUST MANIFOLD IF OIL TEMPERATURE RISES.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Isuzu told its dealers about the 1991 Isuzu Trooper: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 612590 | THIS TECHNICAL SERVICE BULLETIN OUTLINES THE DETAILED PROCEDURES FOR THE AIR CONDITIONING SYSTEM CONVERSION / RETROFIT. *TT |
| 10237146 | This bulletin outlines the procedures for using the Alpine Exchange Program (the "Exchange Program"). The Exchange Program must be used when any Alpine radio or other component covered by this bulletin is repaired under warranty and may also be used for radio and component repairs not covered under warranty. Contact Alpine directly for pricing and payment methods applicable to radio and component repairs not covered under warranty. |
| 10218932 | Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback. This bulletin was revised to add a Parts Warranty Form |
| 10218927 | Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback. |
NHTSA manufacturer communications (public domain)
NHTSA investigations
ENGINE COMPARTMENT FIRES
HEATER CORE FAILURE
DEFECTIVE HEATER CORES
REAR DOOR HINGE SEPARATION
REAR DOOR HINGE SEPARATION
NHTSA Office of Defects Investigation