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2003 Cadillac DeVille

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

Body PASSENGER CARTransmission Automatic 4-spd

The 2003 Cadillac DeVille is classified as a passenger car that pairs an Automatic 4-spd transmission with an engine requiring 8 qt of 5W-30 API oil and carries EPA ratings of 16/25/19 mpg. Reliability records indicate 147 total owner complaints and 4 recalls for this model year, with the Electrical System emerging as the top complaint area. Within the broader 1990-2005 model complaint history, this year's figure sits between the lineage's lowest count of 94 in 1990 and the highest of 306 in 1997, indicating that this model year does not represent the lowest or highest complaint volumes recorded for the generation.

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 capacity8 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque100 ft-lbsOEM · verified

EPA fuel economy16/25/19 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 79 · 800 CCA battery, OE oil filter 12731179. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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 79 · 800 CCAOEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731179
Engine air filter	19166106
Fuel filter	25121293 discontinued
Spark plug	12571535
Front wiper blades	25670415 alt 15214346
Serpentine belt	12588412 alt 12569505
Thermostat	12559807 alt 03522676
Cabin air filter	25906375

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined	16 / 25 / 19 mpg
Drivetrain	Front-Wheel Drive
Passenger volume	115 cu ft
Cargo volume	19 cu ft
Recommended fuel	Regular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the DeVille of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

6.4–7.3 sec0–60 mph (tested)quickest 6.40 sec — 2002 DTS Sedan

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2002	DTS Sedan 4.6L V8	6.40 sec	15.00 sec	300 hp	FWD
2002	DTS Sedan 4.6L V8	7.30 sec	15.80 sec	300 hp	FWD
2000	DTS Sedan 4.6L V8	6.60 sec	15.00 sec	300 hp	FWD
2000	DTS Sedan 4.6L V8	6.80 sec	15.10 sec	300 hp	FWD

Service quick specs OEM factory data

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

This engine holds 8 qt of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 100 ft-lbs, the oil drain plug to 15.0 ft-lbs. The firing order is 1-2-7-3-4-5-6-8. 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 Fluid	DOT 3
Engine Coolant	DEX-COOL OR EQUIVALENT
Engine Oil	5W-30 · API
Engine Oil Capacity	8 qt
Power Steering Fluid	USE GM PART NO. 1052884 OR EQUIVALENT

Engine torques

Intake Manifold to Engine Bolts	7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	18 ft-lbs
Engine Oil Pan Drain Plug	15.0 ft-lbs
Engine Oil Pan Drain Plug	15.0 ft-lbs
Engine Valve Cover Bolts	7.4 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Front Wheel Hub	170 (FE7) ft-lbs

Ignition

Cylinder Firing Order	1-2-7-3-4-5-6-8
Spark Plug Manufacturer	AC Delco
Spark Plug Type	AC 41-929
Spark Plug Gap	0.050 in
Spark Plug Torque	11.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	2.20 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	8.70 oz
Standard BCI Group Number	79
Standard BCI Cranking Performance	800 cca

Service checks

Pressure Test	15; Do not exceed 20 psi.
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Key ON Engine OFF (KOEO)	41-47
Injector Primary Resistance	11-14 @ 50-90 degreesF ohms
Engine Compression	140
Engine Oil Pressure	35 psi
Engine Oil Pressure RPM	2000 rpm

Brakes

Brake Application	WITH Heavy Duty / WITH STANDARD
Torque Caliper to Bracket	83 ft-lbs
Torque to Knuckle	181 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Brake Application	WITH Heavy Duty / WITH STANDARD
Rotor Max Parallel Variation	0.001 in
Rotor Runout Limit	0.002 in
Rotor Nominal Thickness From	1.496 in / 1.142 in / 0.433 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 5 stages

1	M11 bolts	30 ft. lbs
2	M11 bolts	70 degrees
3	M11 bolts	60 degrees
4	M11 bolts	45 degrees
5	8.9

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) · Throttle Body (inspect)
Every 100,000 mi	Spark Plugs (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.

The 2003 Cadillac DeVille represents a mid-cycle refinement point within its generation, showing a notable decline in complaints (147) compared to the peak years of 1997 (306) and 2000 (248), though still above the generation’s lowest in 2005 (104). Recalls remained steady at four—consistent with 2001 and 2002—while investigations dropped to zero, suggesting resolved or stabilized issues from earlier years. The data reveals a clear trend of escalating technical service bulletins (TSBs), peaking in 2005, with 2003’s 498 TSBs indicating proactive manufacturer responses to emerging concerns, particularly in the electrical system (29 complaints), the top issue for the year. Crash-related complaints (15) were moderate, and no fire incidents were reported, aligning with the broader decline in severe safety issues post-2000. While the 2003 model avoids the complaint spikes of earlier years, its high TSB count signals persistent, though likely addressable, reliability quirks. **Takeaway:** The 2003 DeVille is a relatively sound choice within its generation, offering improved reliability over earlier models but requiring diligent maintenance to mitigate electrical and minor powertrain risks.

Open recalls

NHTSA campaigns

498

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

147

Owner complaints

15 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 ’02’03’04 ’05

Owner complaints filed with NHTSA, by component

All 147 complaints on record, top 8 components.

Electrical System29

Air Bags13

Power Train7

Unknown Or Other6

Engine6

Engine & Engine Cooling6

Visibility6

Service Brakes, Hydraulic6

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

14V355000Electrical System:IgnitionReported 23/06/2014

This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should… Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on…

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…

Technical service bulletins NHTSA · verified

Showing 5 of 498 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 DeVille. 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 79 battery Vehicles taking 8 qt Engine oil filter 12731179 Engine air filter 19166106 Fuel filter 25121293 Spark plug 12571535

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 DeVille take?

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

Does the 2003 DeVille have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the DeVille get?

EPA figures are 16 city / 25 highway / 19 combined mpg.