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2011 Buick Enclave AWD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2011 Enclave AWD.

Body SUVTransmission Automatic 6-spd

The 2011 Buick Enclave AWD is an all‑wheel‑drive SUV paired with a six‑speed automatic transmission and an EPA rating of 16/22/18 mpg, while its engine requires 5.5 quarts of 5W‑30 oil. Reliability data records 211 owner complaints, with steering identified as the top complaint area, and the model year was subject to six recalls. This complaint volume and recall count place the 2011 Enclave in a moderate reliability tier for the generation, signaling that prospective owners should monitor steering‑related components closely.

Model year2014201320122011201020092008

Quick specs

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

Engine oil capacity5.5 qtOEM · verified
Engine oil type5W-30OEM · verified
Lug nut torque140 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 48 · 660 CCA battery, OE oil filter 12731742. 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 48 · 660 CCAOEM · verified
Tail / brake / turnLAMPOEM · verified
Tire sizeP255-65R18OEM · verified
Wheel / rim7.5; 8 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter12731742
Engine air filter15278634
Spark plug12681660
Battery88866309
Front wiper blades25941804 alt 25941805
Serpentine belt12608660
Thermostat12689041
Cabin air filter20958479

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 6-spd

Dimensions & weight NHTSA vPIC

Overall length202 in
Overall width79.1 in
Overall height72.8 in
Wheelbase118.9 in
Curb weight4985 lb
Track (front / rear)67.3 / 66.9 in
Weight distribution (front / rear)55/45

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 22 / 18 mpg
DrivetrainAll-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 5.5 qt of 5W-30 engine oil, SAE 75W · SYNTHETIC in the differential, DOT 3 brake fluid. Torque lug nuts to 140 ft-lbs, the oil drain plug to 15.0 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 FluidATF
Automatic Transmission Fluid Capacity4.2-6.3
Brake FluidDOT 3
Differential Gear OilSAE 75W · SYNTHETIC
Differential Gear Oil Capacity1.7 qt
Engine CoolantDEX-COOL OR EQUIVALENT
Engine Oil5W-30
Engine Oil Capacity5.5 qt

Engine torques

Intake Manifold to Engine Bolts17 ft-lbs
Exhaust Manifold to Cylinder Head Bolts15 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs
Engine Oil Pan Drain Plug15.0 ft-lbs
Engine Valve Cover Bolts7.5 ft-lbs

Chassis torques

Lug Nuts140 ft-lbs
Transfer Case Fill Plug29.0 ft-lbs
Transfer Case Drain Plug29.0 ft-lbs
Front Wheel Hub173 ft-lbs
Rear Wheel Hub151 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6
Spark Plug ManufacturerAC Delco
Spark Plug Gap0.043 in
Spark Plug Torque13.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity2.30-2.50 lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.5-8.0 oz
Standard BCI Group Number48
Standard BCI Cranking Performance660 cca

Service checks

Pressure Test15 psi
Radiator Cap Pressure Relief15 psi
Thermostat Opening Temperature194-225 °F
Injector Primary Resistance1.25
Engine Compression140
Engine Oil Pressure10 psi @ Idle, 20 psi @ 2000 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket47
Torque to Knuckle129 ft-lbs
Minimum Pad ThicknessFront: 0.030; Rear: 0.030 in
Rotor Max Parallel Variation0.001 in
Rotor Runout Limit0.002 in
Rotor Nominal Thickness From1.14 in / 0.79 in
Rotor Nominal Thickness To1.14 in / 0.79 in
Rotor Minimum Machining1.09 in / 0.73 in

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
174 ft. lbs., step 2: 15074 ft. lbs
Cylinder Head — tightening sequence 2 stages

Prep Do not reuse old bolts. Do not allow oil on cylinder head or head bolt bosses · M11 Bolts:

122.0 ft. lbs.22 ft. lbs
2150 degrees; M8 Bolts:150 degrees
111.0 ft. lbs.11 ft. lbs
275 degrees75 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 7,500 miTire & Wheel Assembly (rotate)
Every 25,000 miFuel System (inspect)
Every 50,000 miEngine Air Filter Element (replace) · Fuel Evaporative Emission Control System (inspect)
Every 100,000 miSpark Plug Wires (inspect) · Spark Plugs (replace) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
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.

Owner complaints about the 2011 Buick Enclave AWD top in one area — the steering, 31 of 211 reports (15%), well ahead of the next concern. None of this vehicle's 6 recall campaigns target the steering, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 14 of the reports describe a crash and 3 a fire — a small share of the total, but worth weighing against the steering 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.

6
Open recalls
NHTSA campaigns
1473
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
211
Owner complaints
14 involved a crash · 3 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 211 complaints on record, top 8 components.

Steering31
Air Bags28
Power Train25
Structure19
Engine16
Electrical System8
Tires5
Vehicle Speed Control5

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 6 campaigns on record for this vehicle.

21V782000Air Bags:FrontalReported 07/10/2021

General Motors, LLC (GM) is recalling certain 2008-2017 Buick Enclave and 2013-2017 Chevrolet Traverse vehicles. The driver's air bag inflator may explode during deployment, due to a manufacturing defect. Remedy: Dealers will replace the driver's air bag module, free of charge. Interim owner notification letters were mailed on November 3, 2021. Owner notification letters were mailed on…

21V246000Air Bags:Critical FastenersReported 08/04/2021

General Motors, LLC (GM) is recalling certain 2010-2015, 2017 Buick Enclave, 2010-2019 Chevrolet Traverse, and 2011-2016 GMC Acadia vehicles. The side curtain air bags may not be properly attached. Remedy: GM will notify owners, and dealers will inspect and, if necessary, realign or replace the weld nuts, free of charge. Owner notification letters were mailed on May 24, 2021. Owners…

Technical service bulletins NHTSA · verified

Showing 5 of 1473 bulletins on record with NHTSA.

BulletinDateComponentSummary
PIT3271Q2026-04-01Unknown Or OtherThis preliminary information communicates information about how to determine if a wheel…
PIP61042026-03-09Unknown Or OtherThis Preliminary information communicates the steps on how to save a GDS2 Session Log and…
PIP4902V2026-03-09Unknown Or OtherThis preliminary information advises a dealer on how to email GDS2 session logs into…
PIP4902U2026-01-08Unknown Or OtherThis preliminary information advises a dealer on how to email GDS2 session logs into…
PIT5214G2025-11-20Unknown 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 Enclave 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 48 batteryVehicles taking 5.5 qtEngine oil filter 12731742Engine air filter 15278634Spark plug 12681660Battery 88866309

Reference guides

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

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2011 Enclave AWD take?

5.5 qt of 5W-30 MEETING GM DEXOS 1 SPECIFICATION, per the factory manual.

Does the 2011 Enclave AWD have open recalls?

NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Enclave AWD get?

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