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1994 Isuzu Trooper

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1994 Trooper.

Body SUVTransmission Automatic 4-spd

The 1994 Isuzu Trooper is a conventional SUV pairing a 4-speed automatic transmission with EPA fuel economy of 14 city, 17 highway, and 15 combined mpg. Its 49 total owner complaints cluster chiefly around Engine & Engine Cooling, and the model carries 2 recalls — figures that place it in the moderate band of the Trooper's 1990–2002 complaint history, well beneath the 81-complaint peak hit in 1999 yet comfortably above the 12 logged in the final 2002 model year. For a researcher, that means the 1994 sits closer to the reliable end of the platform's trajectory than to its trouble years, with engine and cooling concerns present but not at the levels that would define the late-1990s editions.

Model year2002 2001 1995 1994 1993 1992 1991 1990 1989

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

EPA fuel economy14/17/15 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	179.1 in
Overall width	68.9 in
Overall height	72.8 in
Wheelbase	108.7 in
Curb weight	4156 lb
Track (front / rear)	57.5 / 57.5 in
Weight distribution (front / rear)	51/49

Ratings & economy EPA / vPIC

EPA city / highway / combined	14 / 17 / 15 mpg
Drivetrain	4-Wheel or All-Wheel Drive
Recommended fuel	Regular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine GL-5 in the differential, GM Part No. 12377967 brake fluid.

Lubricants & capacities

Brake Fluid	GM Part No. 12377967
Differential Gear Oil	GL-5
Differential Gear Oil Capacity	3.2 Pints,
Engine Coolant	ETHYLENE GLYCOL
Power Steering Fluid	ATF
Transfer Case Fluid	5W-30
Transfer Case Fluid Capacity	3.2 Pints

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; spark plugs every 30,000 mi.

At 7,500 mi	Driveshaft Flange Yoke (torque) · Engine Oil Filter (replace) · Universal Vehicle Operation (inspect idle speed)
Every 7,500 mi	Battery (inspect electrolyte level) · Body Latches, Locks & Hinges (inspect) · Brake Hydraulic System (inspect fluid level) · Brake Line (inspect) · CV Joint Boot (inspect) · Clutch Assembly (inspect)
At 15,000 mi	Drive Axle Assembly (drain & refill) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
Every 15,000 mi	Brake Linings (inspect) · Brake Pedal Assembly (inspect) · Clutch Pedal Assembly (inspect) · Cruise Control System (inspect) · Driveshaft Flange Yoke (torque) · Engine Oil Filter (replace)
Every 30,000 mi	Accessory Drive Belt (inspect) · Clutch Hydraulic Line (inspect) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Spark Plugs (replace)
At 60,000 mi	Drive Axle Assembly (drain & refill) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
Every 60,000 mi	Air Conditioning Condenser (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Radiator (inspect) · Timing Belt (replace)
Every 90,000 mi	Oxygen Sensor (replace)
At 120,000 mi	Universal Vehicle Operation (inspect idle speed)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 1994 Isuzu Trooper occupies a transitional midpoint in its generation's federal record, arriving after the early-generation spike in investigations (peaking at 7 in 1990) and prior to a late-generation surge in complaints (peaking at 81 in 1999). For the 1994 model year specifically, federal data shows 49 complaints, 2 recalls, and 0 investigations, marking a stabilization from the higher investigative years but a slight complaint uptick from the 1992 low of 29. The primary complaint categories for 1994 are Engine & Engine Cooling (9), Tires (7), Structure (5), and Electrical System (5), alongside 5 crash and 3 fire complaints, though the data does not specify the root causes for these failures. Positioned at the conclusion of the early-generation investigative era and before the late-generation escalation of technical service bulletins, the 1994 model reflects a brief period of resolved early flaws. Given its moderate complaint volume and absence of federal investigations relative to the generation's extremes, the 1994 Trooper is a pragmatically sound year to purchase within this otherwise volatile lineage.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

5 involved a crash · 3 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Rollover★★★★★

Owner complaints by model year NHTSA · this generation & adjacent

’90 ’91 ’92 ’93’94’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02

Owner complaints filed with NHTSA, by component

All 49 complaints on record, top 8 components.

Engine & Engine Cooling9

Tires7

Structure5

Electrical System5

Suspension5

Vehicle Speed Control3

Wheels2

Engine1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

04V199000Vehicle Speed Control:CablesReported 22/04/2004

ON CERTAIN SPORT UTILITY VEHICLES, THE ACCELERATOR CABLE CAN STICK SO THAT THE ENGINE SPEED WILL NOT IMMEDIATELY DECREASE UPON RELEASE OF THE ACCELERATOR PEDAL. Remedy: DEALERS WILL REPLACE THE THROTTLE CABLE RUBBER BOOT. OWNER NOTIFICATION BEGAN ON MAY 24, 2004. OWNERS SHOULD CONTACT ISUZU AT 1-800-255-6727.

94V132000Engine And Engine Cooling:EngineReported 19/07/1994

CONSTANT EXPANSION AND CONTRACTION OF THE CYLINDER HEAD CAUSES THE CAMSHAFT SEAL END PLUG CAN BECOME DISLODGED FROM THE CYLINDER HEAD. THIS ALLOWS OIL TO LEAK FROM THE CAMSHAFT. Remedy: DEALERS WILL INSTALL CAMSHAFT END SEAL PLUG RETAINER PLATES.

Technical service bulletins NHTSA · verified

Showing 5 of 6 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
IB13-R-001G	2023-05-08	Unknown Or Other	This bulletin outlines the procedures for using the Alpine Exchange Program (the…
WB13-X-001B	2022-08-30	Equipment	Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural…
WB13-X-001A	2022-08-02	Equipment	Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural…
SB9914S007	1999-04-01	Seats	INFORMATION REGARDING THE AVAILABILITY OF THE CHILD SEAT TETHER ANCHOR KIT. *TT
9807L001	1998-07-01	Unknown Or Other	A NEW TYPE OF LSD LUBRICANT WAS INTRODUED WHICH CONTAINS FRICTION MDIFIERS, NECESSARY FOR…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific Trooper. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Maintenance schedules Fluid capacities & specs

Frequently asked

Does the 1994 Trooper have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Trooper get?

EPA figures are 14 city / 17 highway / 15 combined mpg.