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2001 Isuzu Trooper

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2001 Trooper.

Transmission Automatic 4-spd

The 2001 Isuzu Trooper features a 4-speed automatic transmission and maintains an EPA fuel economy rating of 14/18/15 mpg. Reliability for this model year is characterized by one recall and 29 owner complaints, with the power train cited as the primary area of concern. Within the 1990-2002 model history, the 2001 version represents a downward trend in reported issues, sitting between the 1999 peak of 81 complaints and the 2002 low of 12.

Model year2002 2001 1995 1994 1993 1992 1991 1990 1989

Quick specs

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

Lug nut torque87 ft-lbsOEM · verified

EPA fuel economy14/18/15 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 24 MT · 585 CCA battery, OE oil filter 8971406660. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 24 MT · 585 CCAOEM · verified

Tire sizeP245-70SR16OEM · verified

Wheel / rim7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	8971406660
Engine air filter	2908429010
Fuel filter	8251211130
Spark plug	8971259690
Front wiper blades	8972547640 alt 8972547620
Serpentine belt	8971305610 alt 2906629000
Thermostat	8973628940 alt 8971231620

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	180.7 in
Overall width	72.4 in
Overall height	72.4 in
Wheelbase	108.7 in
Curb weight	4464 lb
Track (front / rear)	59.8 / 59.8 in
Weight distribution (front / rear)	51/49

Ratings & economy EPA / vPIC

EPA city / highway / combined	14 / 18 / 15 mpg
Drivetrain	Rear-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 GM Part No. 12377967 brake fluid. Torque lug nuts to 87 ft-lbs, the oil drain plug to 58.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Brake Fluid	GM Part No. 12377967
Engine Coolant	ETHYLENE GLYCOL
Transfer Case Fluid	5W-30
Transfer Case Fluid Capacity	1 Pint

Engine torques

Camshaft Bearing/Carrier Cap Bolts or Studs	9 ft-lbs
Crankshaft Pulley and/or Damper Bolts	123 ft-lbs
Intake Manifold to Engine Bolts	18 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	38 ft-lbs
Engine Oil Pan Drain Plug	58.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	7 ft-lbs

Chassis torques

Lug Nuts	87 ft-lbs
Transfer Case Fill Plug	TOD: 29.0, Shift on the fly: 58 ft-lbs
Transfer Case Drain Plug	TOD: 29.0, Shift on the fly: NS ft-lbs

Ignition

Cylinder Firing Order	1-2-3-4-5-6
Ignition Coil Primary Resistance	0.4 approx. ohms
Spark Plug Gap	0.040 in
Spark Plug Torque	13.0 ft-lbs
Ignition Timing	20, Not adjustable degrees

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	1.32 lbs
Oil Type	PAG
Oil Capacity	5.00 oz
Optional BCI Group Number	27
Optional BCI Cranking Performance	625 cca
Standard BCI Group Number	24 MT
Standard BCI Cranking Performance	585 cca

Service checks

Pressure Test	28 psi
Radiator Cap Pressure Relief	13-17 psi
Thermostat Opening Temperature	166-173 °F
Injector Primary Resistance	11.8-12.6 @ 50-95 degreesF ohms
Engine Compression	145 minimum PSI.
Engine Oil Pressure	57-80 psi
Engine Oil Pressure RPM	3000 rpm
Intake Valve Lash	0.011 in

Brakes

Torque Caliper to Bracket	54 ft-lbs / 32 ft-lbs
Torque to Knuckle	115 ft-lbs / 76 ft-lbs
Minimum Pad Thickness	0.039 in
Minimum Shoe Thickness	0.039 in
Rotor Max Parallel Variation	0.0004 in
Rotor Runout Limit	0.005 in
Rotor Nominal Thickness From	1.024 in / 0.71 in
Rotor Nominal Thickness To	1.024 in / 0.71 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

18 ft. lbs., Step 2: 110

18 ft. lbs

Cylinder Head — tightening sequence 2 stages

1	22 ft. lbs.	22 ft. lbs
2	47

Engine Flywheel Bolts — tightening sequence 1 stages

30 ft. lbs., Step 2: 45

30 ft. lbs

Main Bearings — tightening sequence 1 stages

18 ft. lbs., Step 2: 180

18 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 100,000 mi.

At 7,500 mi	CV Joint Boot (inspect) · Driveshaft Flange Yoke (torque) · Driveshaft U-Joint (lubricate)
Every 7,500 mi	Battery (inspect electrolyte level) · Body Latches, Locks & Hinges (inspect) · Brake Hydraulic System (inspect fluid level) · Clutch Assembly (inspect) · Clutch Master Cylinder (inspect fluid level) · Driveshaft (inspect)
At 15,000 mi	Drive Axle Assembly (drain & refill) · Transfer Case Assembly (drain & refill)
Every 15,000 mi	Body Lock Cylinders (lubricate) · Brake Line (inspect) · Brake Pedal Assembly (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Clutch Pedal Assembly (inspect)
Every 30,000 mi	Accessory Drive Belt (inspect) · Clutch Hydraulic Line (inspect) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Transfer Case Assembly (drain & refill) · Wheel Bearing (inspect)
At 60,000 mi	Drive Axle Assembly (drain & refill) · Transfer Case Assembly (drain & refill)
Every 60,000 mi	Air Conditioning Condenser (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Radiator (inspect)
Every 100,000 mi	Engine Valves (inspect valve lash) · Spark Plugs (replace) · Timing Belt (replace)

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 2001 Isuzu Trooper recorded 29 consumer complaints, a notable decline from the generation's peak of 81 in 1999 and 49 in 2000, though still above the minimal 14 observed in 1997. The single recall in 2001 represents reduced regulatory activity compared to the two recalls in 2000, though the elevated TSB count of 44 (matching 2002's level) indicates persistent technical service bulletins being issued, suggesting ongoing but non-critical issues. The top complaint areas—Power Train (6), Engine & Engine Cooling (4), Vehicle Speed Control (3), and Service Brakes (3)—do not include fire incidents (0), though there were 2 crash-related complaints. The data suggests 2001 sits at a transitional point where complaint volume was decreasing but service bulletin activity remained high, possibly reflecting manufacturer refinements mid-generation. Given the lower complaint count relative to surrounding years and the absence of fire-related issues, the 2001 model appears comparatively less problematic than the 1999-2000 peak years, making it a relatively safer used purchase within this generation, though the high TSB volume warrants a thorough pre-purchase inspection.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

2 involved a crash · 0 a fire

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 29 complaints on record, top 8 components.

Power Train6

Engine & Engine Cooling4

Vehicle Speed Control3

Service Brakes, Hydraulic3

Tires2

Service Brakes, Hydraulic,Engine & Engine Cooling,Power Train2

Service Brakes, Air,Fuel System, Other,Engine1

Electrical System,Exterior Lighting1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

00V376000Engine And Engine Cooling:Engine:GasolineReported 14/11/2000

VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 4-WHEEL DRIVE AND AUTOMATIC TRANSMISSIONS BUILT WITH TOD (TORQUE-ON-DEMAND). IN CERTAIN HIGH SPEED, FRONTAL CRASHES, MOVEMENT OF ENGINE COMPARTMENT COMPONENTS… Remedy: DEALERS WILL INSTALL A NEW, REINFORCED FUEL HOSE ASSEMBLY. NOTE: THE FUEL LEAKAGE ISSUE IN THIS RECALL CAMPAIGN IS NOT THE SAME AS THE ONE ADDRESSED IN THEIR PREVIOUS CAMPAIGN…

Technical service bulletins NHTSA · verified

Showing 5 of 44 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…
IB09-X-002B	2022-07-20	Equipment	The following is a list of the Isuzu-recommended Threebond product part numbers…
IB09-X-004C	2022-07-20	Engine And Engine Cooling	The Isuzu Commercial Truck of America (ICTA) Service Technical Assistance Center (TAC)…

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.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 24 battery Engine oil filter 8971406660 Engine air filter 2908429010 Fuel filter 8251211130 Spark plug 8971259690

Reference guides

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

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

Frequently asked

Does the 2001 Trooper have open recalls?

NHTSA lists 1 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 / 18 highway / 15 combined mpg.