OldsmobileAurora2003Overview/oldsmobile/aurora/2003/base/

2003 Oldsmobile Aurora

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

Body PASSENGER CARTransmission Automatic 4-spd

The 2003 Oldsmobile Aurora is a passenger car featuring a 4-speed automatic transmission and an engine requiring 7.5 quarts of 10W-30 API oil, delivering an EPA fuel economy rating of 15/24/18 mpg. Closing the production run that spanned from 1993 to 2003, this model year recorded only 10 owner complaints—primarily concerning the structure—and two recalls. This represents a substantial decline in issues compared to the model's historical peak in 1995, which saw 349 complaints.

Model year20032002200119991998199719961995

Quick specs

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

Engine oil capacity7.5 qtOEM · verified
Engine oil type10W-30 APIOEM · verified
Lug nut torque100 ft-lbsOEM · verified
EPA fuel economy15/24/18 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 100 · 770 CCA battery, OE oil filter 12731179. 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 100 · 770 CCAOEM · verified
Tire sizeP265-65R17OEM · verified
Wheel / rim8-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731179
Engine air filter19166106
Fuel filter25330711 alt 25121293
Spark plug12571535
Front wiper blades15214346
Serpentine belt12588412 alt 12569505
Thermostat12559807 alt 12574478

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length199.2 in
Overall width72.8 in
Overall height56.7 in
Wheelbase112.2 in
Curb weight3803 lb
Track (front / rear)62.2 / 62.2 in
Weight distribution (front / rear)64/36

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 24 / 18 mpg
DrivetrainFront-Wheel Drive
Passenger volume105 cu ft
Cargo volume15 cu ft
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 7.5 qt of 10W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 100 ft-lbs, the oil drain plug to 15.0 ft-lbs. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake FluidDOT 3
Engine CoolantDEX-COOL OR EQUIVALENT
Engine Oil10W-30 · API
Engine Oil Capacity7.5 qt
Power Steering FluidUSE GM PART NO. 1052884 OR EQUIVALENT

Engine torques

Intake Manifold to Engine Bolts7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts18 ft-lbs
Engine Oil Pan Drain Plug15.0 ft-lbs
Engine Valve Cover Bolts7.0 ft-lbs

Chassis torques

Lug Nuts100 ft-lbs
Front Wheel Hub118 ft-lbs

Ignition

Spark Plug ManufacturerAC Delco
Spark Plug Type41-950
Spark Plug Gap0.060 in
Spark Plug Torque13.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity2.20 lbs
Oil GroupPAG
Oil Type46
Oil Capacity9.00 oz
Standard BCI Group Number100
Standard BCI Cranking Performance770 cca

Service checks

Pressure Test15 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature188-206 °F
Fuel Pump Pressure Minimum62.0 psi
Key ON Engine OFF (KOEO)41-47
RPM31-44 @ Idle rpm
Injector Primary Resistance11-14 na ohms
Engine Compression140 Minimum psi

Brakes

Torque Caliper to Bracket20 ft-lbs / 137 ft-lbs
Torque to Knuckle94 ft-lbs / 100 ft-lbs
Minimum Pad ThicknessFront: 0.030; Rear: 0.030 specification
Rotor Max Parallel Variation0.001 in
Rotor Runout Limit0.002 in
Rotor Nominal Thickness From1.267 in / 0.433 in
Rotor Nominal Thickness To1.267 in / 0.433 in
Rotor Minimum Machining1.224 in / 0.404 in

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
137 ft. lbs., step 2: 12037 ft. lbs
Cylinder Head — tightening sequence 5 stages
130 ft. lbs.30 ft. lbs
270 degrees.70 degrees
360 degrees.60 degrees
460 degrees.60 degrees
58.8

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 miTire & Wheel Assembly (rotate)
Every 30,000 miEngine Air Filter Element (replace) · Throttle Body (inspect)
Every 100,000 miSpark Plugs (replace) · Transmission Fluid & Filter (replace)
At 150,000 miAccessory 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.

The 2003 Oldsmobile Aurora shows a dramatic improvement in consumer complaints compared to earlier years in this generation, with only 10 complaints recorded—down substantially from the peak of 349 in 1995 and even from the elevated 133 complaints in 2001. The two recalls in 2003 are consistent with the previous year, and no NHTSA investigations were opened for this model year. While the 381 technical service bulletins may appear high, this is typical for later model years as manufacturers document more service procedures; the TSB count actually declined slightly from 392 in 2002. The target year's complaint areas (structure, air bags, fuel/propulsion, and vehicle speed control) show no clear pattern suggesting a systemic defect, and there was only one crash complaint and zero fire complaints recorded. Given the sharp decline in consumer complaints from the earlier problematic years and the absence of ongoing investigations, the 2003 Aurora represents one of the more reliable model years within this generation and would be a comparatively sound choice for a used vehicle shopper.

2
Open recalls
NHTSA campaigns
381
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
10
Owner complaints
1 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 10 complaints on record, top 8 components.

Structure2
Air Bags1
Fuel/Propulsion System1
Vehicle Speed Control1
Electrical System1
Electrical System,Equipment1
Power Train1
Visibility1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

02V222000Air Bags:FrontalReported 09/08/2002

CERTAIN PASSENGER, MINI VANS, AND SPORT UTILITY VEHICLES HAVE AN AIR BAG INFLATOR ON THE DRIVER'S SIDE THAT COULD FRACTURE AT A WELD DURING A DEPLOYMENT. Remedy: DEALERS WILL INSPECT, AND REPLACE, IF NECESSARY, THE AIR BAG MODULE ASSEMBLY ON THE DRIVER'S SIDE. OWNER NOTIFICATION BEGAN AUGUST 15, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN…

03V238000Fuel System, Gasoline:Storage:Tank AssemblyReported 01/07/2003

ON CERTAIN CADILLAC DEVILLE AND SEVILLE PASSENGER VEHICLES, FUNERAL COACHES, AND LIMOUSINES EQUIPPED WITH A V8 (4.6L) ENGINE, OLDSMOBILE AURORA PASSENGER VEHICLES EQUIPPED WITH A V8 (4.0L ) ENGINE, AND PONTIAC… Remedy: DEALERS WILL REPLACE THE FUEL TANK PRESSURE SENSOR. OWNER NOTIFICATION BEGAN ON OCTOBER 17, 2003. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2339; OLDSMOBILE AT 1-800-630-6537…

Technical service bulletins NHTSA · verified

Showing 5 of 381 bulletins on record with NHTSA.

BulletinDateComponentSummary
PIP5601C2025-07-18Unknown Or OtherThis PI communicates the requirement to provide a pico file to receive diagnostic…
23-NA-0012025-03-28Electrical SystemThis service bulletin provides information for dealers/technicians on OnStar Module 2G…
PIP5358D2025-02-19Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIP4723J2024-10-25Electrical SystemThis Preliminary Information communicates to the dealer the process for downloading or…
PIT5099H2024-09-12Unknown Or OtherThis 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 Aurora. 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.

Reference guides

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

Frequently asked

How much oil does the 2003 Aurora take?

7.5 qt of 10W-30 API, per the factory manual.

Does the 2003 Aurora have open recalls?

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

What gas mileage does the Aurora get?

EPA figures are 15 city / 24 highway / 18 combined mpg.