BuickRainier2006Overview/buick/rainier/2006/base/

2006 Buick Rainier

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2006 Rainier.

Body SUV

The 2006 Buick Rainier is a mid-size SUV whose engine takes 6 quarts of 5W-30 API oil, a straightforward service point for owners. Within the 2003–2007 model run, this year’s 91 owner complaints and 7 recalls place it squarely between the troubled 2004 peak of 158 complaints and the nearly spotless 2003 debut with just 1, while fuel system issues dominate the reported problems. That positions the 2006 Rainier as a middle-ground choice—neither the most nor least reliable of its generation, but one where the known trouble spots are well-documented.

Model year2007200620052004

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 12731172. 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 filter12731172 alt 12731179
Engine air filter19239713
Spark plug12621258 alt 12681663
Battery88866306
Front wiper blades15214346
Serpentine belt12576446 alt 12637202
Thermostat12600171 alt 12570307

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length192.5 in
Overall width75.6 in
Overall height74.4 in
Wheelbase113 in
Curb weight4627 lb
Track (front / rear)62.2 / 62.2 in
Weight distribution (front / rear)55/45

Performance & power Independent road tests

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

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

7.6–7.9 sec0–60 mph (tested)quickest 7.60 sec — 2004 CXL
YearTrim / engine0–60¼ mileHPDrivetrain
2004CXL 5.3L V87.60 sec15.90 sec290 hpAWD
2004CXL 5.3L V87.90 sec15.81 sec290 hpAWD

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 FluidATF
Automatic Transmission Fluid Capacity5
Differential Gear OilSYNTHETIC · 75W-90 · GL-5
Differential Gear Oil Capacity4.3 qt
Engine Oil5W-30 · API
Engine Oil Capacity6 qt
Engine Oil5W-30 · API
Engine Oil Capacity7 qt

Engine torques

Intake Manifold to Engine Bolts7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts15 ft-lbs
Intake Manifold to Engine Bolts7.4 ft-lbs
Exhaust Manifold to Cylinder Head Bolts15 ft-lbs
Engine Oil Pan Drain Plug19.0 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Valve Cover Bolts7.5 ft-lbs
Engine Valve Cover Bolts7.5 ft-lbs

Chassis torques

Lug Nuts100 ft-lbs
Transfer Case Fill Plug20.0 ft-lbs
Transfer Case Drain Plug20.0 ft-lbs
Front Wheel Hub103 ft-lbs
Rear Wheel Hub103 ft-lbs

Ignition

Cylinder Firing Order1-5-3-6-2-4
Cylinder Firing Order1-8-7-2-6-5-4-3
Spark Plug ManufacturerAC Delco
Spark Plug TypeAC 41-981
Spark Plug Gap0.042 in
Spark Plug Torque13.0 ft-lbs
Spark Plug ManufacturerAC Delco
Spark Plug TypeAC 41-981

Battery & A/C

RefrigerantR134a
Refrigerant CapacityFront A/C only, 1.90; front and rear A/C,2.65. lbs
Oil GroupPAG
Oil Type46
Oil Capacity8.00 oz
RefrigerantR134a
Oil GroupPAG
Oil Type46

Service checks

Pressure Test15 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature188-206 °F
Pressure Test15, Pressure should not exceed 20 psi.
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature188-206 °F
Fuel Pump Pressure Minimum50.0 psi
Fuel Pump Pressure Maximum57.0 psi

Brakes

Torque Caliper to Bracket23 ft-lbs / 31 ft-lbs
Torque to Knuckle148 ft-lbs / 118 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 From1.14 in / 0.787 in
Rotor Nominal Thickness To1.14 in / 0.787 in
Rotor Discard at or Under1.08 in / 0.728 in

Multi-step torque procedures OEM · verified

Intake Manifold to Engine Bolts — tightening sequence 1 stages
13.7 ft. lbs., Step 2: 7.43.7 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
111 ft. lbs., Step 2: 1811 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 miExhaust System (Complete) (inspect) · Fuel System (inspect)
Every 50,000 miEngine Air Filter Element (replace) · Transfer Case Assembly (drain & refill)
Every 100,000 miSpark Plug Wires (inspect) · Spark 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 2006 Buick Rainier sits at the peak of a recall curve that began climbing in 2004 (2 recalls) and will decline by 2007 (5 recalls)—its 7 recalls represent the highest single-year recall count across the entire 2003–2007 generation. Complaints, meanwhile, fell from a 2004 high of 158 down to 91 in 2006 and further to 38 in 2007, suggesting owner-reported problems decreased even as the manufacturer addressed systemic defects through recalls. Technical Service Bulletins (TSBs) climbed steadily from 82 in 2003 to 778 in 2006 and 860 by 2007, indicating ongoing dealer-level service guidance throughout the production run. The 2006 model's top complaint areas—Fuel System/Gasoline (23), Exterior Lighting (11), and Electrical System (10)—plus 5 fire-related complaints warrant scrutiny. This combination of elevated recalls with declining but still-present consumer complaints places 2006 at a transitional point: the manufacturer was actively addressing defects, but the vehicle had not yet fully stabilized. The 2006 Rainier is a marginal buy—it has the most recalls of its generation, suggesting thorough manufacturer attention to defects, but the persistence of fuel-system complaints and fire reports means a thorough pre-purchase inspection focusing on those systems is essential before committing.

7
Open recalls
NHTSA campaigns
778
Service bulletins
Manufacturer communications
4
ODI investigations
Office of Defects Investigation
91
Owner complaints
1 involved a crash · 5 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 91 complaints on record, top 8 components.

Fuel System, Gasoline23
Exterior Lighting11
Electrical System10
Fuel System, Other5
Suspension4
Visibility/Wiper3
Fuel/Propulsion System3
Air Bags3

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 7 campaigns on record for this vehicle.

15V519000Exterior Lighting:HeadlightsReported 14/08/2015

General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL… Remedy: GM will notify owners, and dealers will replace the HDM, free of charge. The recall began on May 17, 2016. Owners may contact Buick customer service at 1-800-521-7300 or Pontiac…

15V599000Visibility:Power Window Devices And ControlsReported 24/09/2015

General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles. Fluid may enter into the… Remedy: GM will notify owners, and dealers will install a new driver's door switch module, free of charge. The recall began on November 2, 2015. Owners may contact Buick customer service…

Technical service bulletins NHTSA · verified

Showing 5 of 778 bulletins on record with NHTSA.

BulletinDateComponentSummary
PIP5601C2025-07-18Unknown Or OtherThis PI communicates the requirement to provide a pico file to receive diagnostic…
PIT5074R2025-05-30Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIT5074R2025-05-30Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIT5074R2025-05-30Unknown Or OtherThis Preliminary Information communication provides information to the technician about…
PIP5358D2025-02-19Unknown 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 Rainier. 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 2006 Rainier take?

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

Does the 2006 Rainier have open recalls?

NHTSA lists 7 recall campaign(s) for this model year. Check your specific vehicle by VIN.