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2005 Buick Rainier 2WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2005 Rainier 2WD.

Body SUV

The 2005 Buick Rainier 2WD is an SUV whose engine is serviced with 6 quarts of 5W-30 API oil. This model year accumulated 103 total owner complaints, with the electrical system registering the highest volume of issues, and is subject to one recall. That record places the 2005 Rainier in the model's reliability history as a year defined chiefly by electrical-system reports, meaning any archival assessment of its dependability must center on that domain.

Quick specs

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

Engine oil capacity6 qtOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque100 ft-lbsOEM · 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 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 78 · 600 CCAOEM · verified

Tire sizeP245-65R17OEM · verified

OE service part numbers OEM · verified

Engine oil filter	12731179 alt 12731172
Engine air filter	19239713
Spark plug	12681663 alt 12621258
Battery	88866306
Front wiper blades	15214346
Serpentine belt	12576446 alt 12593774
Thermostat	12600171 alt 12561155

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length	192.5 in
Overall width	75.6 in
Overall height	70.1 in
Wheelbase	113 in
Curb weight	4627 lb
Track (front / rear)	62.2 / 62.2 in
Weight distribution (front / rear)	55/45

Service quick specs OEM factory data

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

This engine holds 6 qt of 5W-30 API engine oil, SYNTHETIC · 75W-90 · GL-5 in the differential. Torque lug nuts to 100 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-8-7-2-6-5-4-3.

Lubricants & capacities

Automatic Transmission Fluid	ATF
Automatic Transmission Fluid Capacity	5
Differential Gear Oil	SYNTHETIC · 75W-90 · GL-5
Differential Gear Oil Capacity	4.3 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	6 qt
Engine Oil	5W-30 · API
Engine Oil Capacity	7 qt

Engine torques

Intake Manifold to Engine Bolts	7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	15 ft-lbs
Intake Manifold to Engine Bolts	7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	15 ft-lbs
Engine Oil Pan Drain Plug	19.0 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Engine Valve Cover Bolts	7.5 ft-lbs
Engine Valve Cover Bolts	7.5 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Transfer Case Fill Plug	20.0 ft-lbs
Transfer Case Drain Plug	20.0 ft-lbs
Front Wheel Hub	103 ft-lbs
Rear Wheel Hub	103 ft-lbs

Ignition

Cylinder Firing Order	1-5-3-6-2-4
Cylinder Firing Order	1-8-7-2-6-5-4-3
Spark Plug Manufacturer	AC Delco
Spark Plug Type	AC 41-981
Spark Plug Gap	0.042 in
Spark Plug Torque	13.0 ft-lbs
Spark Plug Manufacturer	AC Delco
Spark Plug Type	AC 41-981

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	Front A/C only, 1.90; front and rear A/C,2.65. lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	8.00 oz
Refrigerant	R134a
Oil Group	PAG
Oil Type	46

Service checks

Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Pressure Test	15 psi
Radiator Cap Pressure Relief	15 psi
Thermostat Opening Temperature	188-206 °F
Fuel Pump Pressure Minimum	50.0 psi
Fuel Pump Pressure Maximum	57.0 psi

Brakes

Torque Caliper to Bracket	31 ft-lbs / 23 ft-lbs
Torque to Knuckle	110 ft-lbs / 148 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	1.14 in / 0.787 in
Rotor Nominal Thickness To	1.14 in / 0.787 in
Rotor Discard at or Under	1.08 in / 0.728 in

Multi-step torque procedures OEM · verified

Intake Manifold to Engine Bolts — tightening sequence 1 stages

3.7 ft. lbs., Step 2: 7.4

3.7 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

11 ft. lbs., Step 2: 18

11 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 25,000 mi	Exhaust System (Complete) (inspect) · Fuel Filter (replace) · Fuel System (inspect)
Every 50,000 mi	Engine Air Filter Element (replace) · Transfer Case Assembly (drain & refill)
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 2005 Buick Rainier 2WD lead in one area — the electrical system, 21 of 103 reports (20%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the electrical system, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 6 of the reports describe a crash and 3 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

682

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

103

Owner complaints

6 involved a crash · 3 a fire

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

Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 103 complaints on record, top 8 components.

Electrical System21

Fuel System, Gasoline14

Exterior Lighting8

Suspension4

Air Bags3

Fuel System, Other3

Service Brakes, Hydraulic3

Steering,Electrical System,Engine2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

05V035000Visibility:WindshieldReported 03/02/2005

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 212, 'WINDSHIELD MOUNTING.' THE WINDSHIELD URETHANE BEAD MAY NOT HAVE ADHERED TO THE BODY IN CERTAIN AREAS… Remedy: DEALERS WILL REPLACE THE WINDSHIELD FREE OF CHARGE. THE RECALL BEGAN ON MARCH 10, 2005. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CHEVROLET AT 1-800-630-2438, OR GMC AT…

Technical service bulletins NHTSA · verified

Showing 5 of 682 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…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIT5074R	2025-05-30	Unknown Or Other	This Preliminary Information communication provides information to the technician about…
PIP5358D	2025-02-19	Unknown Or Other	This Preliminary Information communication provides information to the technician about…