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2004 Pontiac Aztek AWD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2004 Aztek AWD.

Body SUVTransmission Automatic 4-spd

The 2004 Pontiac Aztek AWD is an all-wheel-drive SUV fitted with a four-speed automatic transmission and an engine requiring 4.5 quarts of 5W-30 API oil, carrying EPA ratings of 16 mpg city, 22 mpg highway, and 18 mpg combined. For researchers tracking reliability, this model year generated 67 owner complaints, with the electrical system cited as the top concern, and carries 4 recalls on record. That concentration of electrical complaints and recall activity makes the 2004 Aztek AWD a notable point in the model's reliability history, meaning electrical components and completed recall repairs should be central to any evaluation.

Model year2005 2004 2003 2002 2001

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 Note the factory cabin air filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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 78 · 600 CCAOEM · verified

Tire sizeP215-70R16OEM · verified

Wheel / rim6.5 inOEM · 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
Battery	88866305 alt 88866306
Front wiper blades	10413111 alt 10317151
Serpentine belt	12588408
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	182.3 in
Overall width	73.6 in
Overall height	66.5 in
Wheelbase	108.3 in
Curb weight	3779 lb
Track (front / rear)	62.6 / 63.8 in
Weight distribution (front / rear)	61/39

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. 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

Automatic Transmission Fluid	ATF
Automatic Transmission Fluid Capacity	5
Engine Oil	5W-30 · API
Engine Oil Capacity	4.5 qt

Engine torques

Intake Manifold to Engine Bolts	Upper: 18 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	12 ft-lbs
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	24.0 ft-lbs
Transfer Case Drain Plug	21.0 ft-lbs
Front Wheel Hub	192 ft-lbs
Rear Wheel Hub	192 ft-lbs

Ignition

Cylinder Firing Order	1-2-3-4-5-6
Spark Plug Manufacturer	AC Delco
Spark Plug Gap	0.045 in
Spark Plug Torque	11.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	1.68 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	7.10 oz
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
Key ON Engine OFF (KOEO)	52-59
Fuel Pump Pressure Minimum	59.0 psi
RPM	42-56 @ Idle rpm
Injector Primary Resistance	11-14 na ohms
Engine Compression	100

Brakes

Torque Caliper to Bracket	26 ft-lbs / 33 ft-lbs
Torque to Knuckle	137 ft-lbs / 92 ft-lbs
Rotor Max Parallel Variation	0.001 in
Rotor Runout Limit	0.002 in
Rotor Nominal Thickness From	1.181 in / 0.43 in
Rotor Nominal Thickness To	1.181 in / 0.43 in
Rotor Minimum Machining	1.118 in / 0.405 in
Rotor Discard at or Under	1.063 in / 0.35 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 2 stages

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

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 25,000 mi	Exhaust System (Complete) (inspect) · Fuel System (inspect)
Every 50,000 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 2004 Pontiac Aztek AWD top in one area — the electrical system, 9 of 67 reports (13%), well ahead of the next concern. That matters, because the electrical system are also the target of recall 05V-157 on this vehicle — so the single most useful check before buying or servicing one is confirming it was actually performed. 5 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the electrical system 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

432

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

5 involved a crash · 0 a fire

Owner complaints filed with NHTSA, by component

All 67 complaints on record, top 8 components.

Electrical System9

Engine & Engine Cooling7

Suspension6

Fuel System, Gasoline5

Service Brakes, Hydraulic5

Fuel/Propulsion System4

Service Brakes3

Air Bags3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

05V157000Electrical System:IgnitionReported 20/04/2005

ON CERTAIN SPORT UTILITY VEHICLES, CONTAMINATION ON IGNITION RELAY CONTACTS CAN CAUSE HIGH RESISTANCE. THIS CAN AFFECT SIGNALS TO THE POWERTRAIN CONTROL MODULE AND, COULD CAUSE INTERMITTENT VEHICLE STALLS AT ANY TIME. Remedy: DEALERS WILL REPLACE THE IGNITION RELAY FREE OF CHARGE. THE RECALL BEGAN ON MAY 4, 2005. OWNERS MAY CONTACT PONTIAC AT 1-800-620-7668 AND BUICK AT 1-866-608-8080.

07V349000Fuel System, Gasoline:StorageReported 08/08/2007

ON CERTAIN VEHICLES, VARIATIONS IN THE MANUFACTURING PROCESS OR EXPOSURE TO HIGH AMBIENT TEMPERATURES MAY LEAD TO FRACTURE OF THE FUEL TANK INLET CHECK VALVE (ICV). Remedy: DEALERS WILL REPLACE THE FUEL TANK. THE RECALL WILL BE MAILED IN TWO PHASES WITH THE FIRST PHASE BEGINNING ON DECEMBER 4, 2007. THE SECOND PHASE WILL BE MAILED ON DECEMBER 13…

Technical service bulletins NHTSA · verified

Showing 5 of 432 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…
23-NA-001	2025-03-28	Electrical System	This service bulletin provides information for dealers/technicians on OnStar Module 2G…
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…

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 Aztek AWD. 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 2004 Aztek AWD take?

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

Does the 2004 Aztek AWD have open recalls?

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

What gas mileage does the Aztek AWD get?

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