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2003 Chevrolet Venture EXT

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Venture EXT.

Body VANTransmission Automatic 4-spd

The 2003 Chevrolet Venture EXT is a VAN variant equipped with a 4-speed automatic transmission, specified to use 4.5 quarts of 5W-30 API oil and rated at 16 mpg city, 22 mpg highway, and 18 mpg combined according to EPA estimates. This model year accumulated 212 owner complaints with Exterior Lighting cited as the predominant concern, alongside eight recalls. That volume of lighting-specific documentation signals a reliability profile where exterior electrical components warrant particular research attention.

Model year2005 2004 2003 2002 2001 2000 1999 1998 1997

Quick specs

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

Engine oil capacity4.5 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque100 ft-lbsOEM · verified

EPA fuel economy16/22/18 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 78 · 600 CCA battery, OE oil filter 12731175. Note the factory front wiper blades and cabin air filter are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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 78 · 600 CCAOEM · verified

Tire sizeP215/70R15OEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731175 alt 25322835
Engine air filter	19166106
Fuel filter	10290491 alt 10333072
Spark plug	12681664
Front wiper blades	10329206 discontinued · alt 10329207
Serpentine belt	12588408 alt 12576454
Thermostat	24507563 alt 10226107
Cabin air filter	10322538 discontinued

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	200.8 in
Overall width	72 in
Overall height	68.1 in
Wheelbase	120.1 in
Curb weight	4180 lb
Track (front / rear)	61.4 / 63.4 in
Weight distribution (front / rear)	58/42

Ratings & economy EPA / vPIC

EPA city / highway / combined	16 / 22 / 18 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 holds 4.5 qt of 5W-30 API engine oil. Torque lug nuts to 100 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Engine Oil	5W-30 · API
Engine Oil Capacity	4.5 qt

Engine torques

Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Valve Cover Bolts	7.4 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Transfer Case Fill Plug	21.0 ft-lbs
Transfer Case Drain Plug	24.0 ft-lbs
Front Wheel Hub	118 ft-lbs
Rear Wheel Hub	192 ft-lbs

Ignition

Cylinder Firing Order	1-2-3-4-5-6
Ignition Coil Secondary Resistance	5000-7000 ohms
Spark Plug Manufacturer	AC Delco
Spark Plug Type	AC 41-940
Spark Plug Gap	0.060 in
Spark Plug Torque	11.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Oil Group	PAG
Oil Type	150
Standard BCI Group Number	78
Standard BCI Cranking Performance	600 cca

Service checks

Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Fuel Pump Pressure Minimum	59.0 psi
Key ON Engine OFF (KOEO)	52-59
RPM	42-56 @ Idle rpm
Injector Primary Resistance	11-14 @ 50-90 degreesF ohms
Engine Compression	100 Minimum psi

Brakes

Torque Caliper to Bracket	40 ft-lbs
Torque to Knuckle	137 ft-lbs
Torque Caliper to Bracket	40 ft-lbs / 32 ft-lbs
Torque to Knuckle	137 ft-lbs / 92 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Rotor Max Parallel Variation	0.001 in
Rotor Runout Limit	0.002 in
Rotor Nominal Thickness From	1.181 in

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

52 ft. lbs., step 2: 72

52 ft. lbs

Cylinder Head — tightening sequence 2 stages

1	44 ft. lbs.	44 ft. lbs
2	95

Intake Manifold to Engine Bolts — tightening sequence 1 stages

5 ft. lbs., step 2: bolts 1-4, 9.6 ft. lbs., step 3: bolts 5-8, 18 ft. lbs., upper 18

5 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; coolant at 150,000 mi. The big-interval services (at 150,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 mi	Tire & Wheel Assembly (rotate)
Every 15,000 mi	Cabin Air Filter (replace)
Every 30,000 mi	Engine Air Filter Element (replace)
Every 100,000 mi	Spark Plug Wires (inspect) · Spark Plugs (replace) · Transmission Fluid & Filter (replace)
At 150,000 mi	Accessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)

Reliability & federal safety record

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

Owner complaints about the 2003 Chevrolet Venture EXT top in one area — the exterior lighting, 27 of 212 reports (13%), well ahead of the next concern. That matters, because the exterior lighting are also the target of recall 08E-050 on this vehicle — so the single most useful check before buying or servicing one is confirming it was actually performed. 20 of the reports describe a crash and 4 a fire — a small share of the total, but worth weighing against the exterior lighting pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

Open recalls

NHTSA campaigns

485

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

212

Owner complaints

20 involved a crash · 4 a fire

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

Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 212 complaints on record, top 8 components.

Exterior Lighting27

Structure19

Engine & Engine Cooling18

Air Bags17

Electrical System15

Fuel System, Gasoline15

Power Train14

Latches/Locks/Linkages9

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 8 campaigns on record for this vehicle.

09E005000SteeringReported 17/02/2009

DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE… Remedy: DORMAN WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE STEERING KNUCKLES FREE OF CHARGE AND REIMBURSE THE REPAIR FACILITY OR OWNER FOR LABOR. THE RECALL BEGAN ON FEBRUARY 23, 2009…

08E050000Exterior Lighting:HeadlightsReported 11/08/2008

K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF… Remedy: K2 MOTOR WILL NOTIFY OWNERS AND OFFER A FULL REFUND. THE RECALL BEGAN ON DECEMEBER 17, 2008. OWNERS MAY CONTACT K2 MOTOR AT 1-909-839-2992.

Technical service bulletins NHTSA · verified

Showing 5 of 485 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
PIP5601C	2025-07-18	Unknown Or Other	This PI communicates the requirement to provide a pico file to receive diagnostic…
PIP5358D	2025-02-19	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIP4723J	2024-10-25	Electrical System	This Preliminary Information communicates to the dealer the process for downloading or…
PIT5099H	2024-09-12	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIT5099H	2024-09-12	Unknown Or Other	This Preliminary Information communication provides information to the technician about…

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 Venture EXT. 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 78 battery Vehicles taking 4.5 qt Engine oil filter 12731175 Engine air filter 19166106 Fuel filter 10290491 Spark plug 12681664

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

How much oil does the 2003 Venture EXT take?

4.5 qt of 5W-30 API, per the factory manual.

Does the 2003 Venture EXT have open recalls?

NHTSA lists 8 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Venture EXT get?

EPA figures are 16 city / 22 highway / 18 combined mpg.