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Buick · Known Issues

2011 Buick Enclave Problems: 7 Known Issues

2011 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2011 Buick Enclave has 7 documented known issues, with 5 rated critical. The most serious are Loss of Power Steering Assist (Pump Wear), Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329 ($0-$1,400 repair), Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption ($2,500-$6,500 repair), Stretched/Worn Timing Chain on 3.6L V6 ($3,200-$3,400 repair) and 6T70/6T75 Transmission Wave Plate Failure ($2,500-$4,500 repair). Across all issues with published estimates, repair costs range from $200 to $6,500. DIY maintenance guides at au7o.io.

In This Article

  • Enclave Steering2
  • Enclave Engine2
  • Enclave Transmission1
  • Enclave Cooling1
  • Enclave HVAC1
  • Recalls12
  • FAQ
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In This Article

  • Steering2
  • Engine2
  • Transmission1
  • Cooling1
  • HVAC1
  • Recalls12
  • FAQ

All 7 Known Issues

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On the 2008-2011 Buick Enclave, 2008-2011 Enclaves (and platform-mates Acadia/Traverse/Outlook) can develop a power steering pump wear condition that causes an intermittent drop in hydraulic pressure and sudden reduced or lost steering assist. The vehicle reverts to manual steering requiring much greater effort, most noticeable at low speeds and during parking. GM issued a Special Coverage Adjustment covering the condition for 10 years/150,000 miles rather than a formal NHTSA recall.

Common Symptoms

  • Steering suddenly becomes hard to turn
  • Intermittent loss of power assist
  • Heavy steering at low speed / parking
  • Whining noise from steering pump

How to Fix

Replace the power steering pump (and inspect/replace fluid and lines). Covered under GM Special Coverage for 10yr/150k mi on affected vehicles; otherwise replace the pump out of pocket.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Power Steering Pump
    Cross-ref20-2403

    Cardone 20-2403. The article directly prescribes the power-steering pump, and Cardone 20-2403 covers every reviewed 2008-2011 Enclave year with exact product identity.

    eBay

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026

On the 2008-2011 Buick Enclave all, gM Special Coverage Adjustment 14329 — extending warranty to 10 years / 150,000 miles — covers 2008-2011 Buick Enclave, 2007-2011 GMC Acadia, 2009-2011 Chevrolet Traverse, and 2007-2010 Saturn Outlook for power-steering pump wear that causes intermittent drop in hydraulic pressure and loss of steering assist. This is a special coverage program, NOT a recall — owners must initiate the claim. Symptoms: heavy steering at low speed, especially when engine is hot.

This issue also affects: Dacia Duster, Dacia Sandero, Dacia Logan

Common Symptoms

  • burning fluid smell
  • PS pressure hose leak
  • smoke from engine bay

How to Fix

Confirm Special Coverage 14329 eligibility at any GM/Buick dealer with your VIN. If still within 10 years and 150,000 miles, remedy is free: dealer flushes power-steering system, replaces the PS pump, and installs a new steering-gear valve housing. If out of the coverage window, expect $700-$1,400 for the same job at an independent.

Typical repair cost:$0 - $1,400

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On the 2008-2012 Buick Enclave 3.6L LLT V6, early Enclaves (2008-2012, plus shared Traverse/Acadia/Outlook) with the 3.6L LLT direct-injection V6 share LaCrosse's timing chain stretch and a separate excessive-oil-consumption issue. The PCV system pulls oil into the intake, intake valves carbon up (no port injection to wash them), and the chain wears prematurely from stretched OLM intervals.

This issue also affects: Buick Cascada, Buick Encore, Buick LaCrosse

Common Symptoms

  • cold start rattle
  • oil consumption (1 qt/1,000 miles)
  • misfire
  • rough idle

How to Fix

Timing chain replacement ($2,500-$4,500 with 3-row crossover labor premium). Walnut-blast intake valve carbon at the same time ($300-$500). PCV system update per TSB. Some owners refuse the chain job at this mileage and trade — failure can mean total engine replacement ($6,000+).

Typical repair cost:$2,500 - $6,500

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On the 2008-2013 Buick Enclave, the 3.6L (and 2.8L) high-feature V6 in 2008-2013 Enclaves is prone to timing chain stretch and worn chain guides/tensioners, sometimes appearing as early as 40,000-60,000 miles. As the chain elongates, valve timing drifts, triggering misfires and a rattle at idle/startup; if a chain jumps a tooth it can bend valves and cause catastrophic engine damage. GM acknowledged the defect (occurring even with regular oil changes) and issued Special Coverage Adjustment #11340C extending the chain warranty to 10 years/120,000 miles on affected engines.

This issue also affects: Buick LeSabre, Buick Park Avenue, Buick Cascada

Common Symptoms

  • Rattling noise at idle or cold startup
  • Check engine light
  • Engine misfire / rough running
  • Reduced engine power message
  • Metal shavings in oil

How to Fix

Replace the timing chains, guides, and tensioners (a full front-of-engine job). If covered under GM Special Coverage #11340C the repair is free up to 10yr/120k mi; otherwise it is an out-of-pocket repair. Keeping oil changes current and using correct-spec oil slows wear.

Typical repair cost:$3,200 - $3,400

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026

On the 2008-2012 Buick Enclave, first-generation Enclaves (2008-2017) use the 6T70/6T75 6-speed automatic, whose stamped-steel 35R wave plate can crack at the teeth after enough shift cycles. When it fractures, the transmission abruptly loses 3rd, 5th, and reverse gears, and debris can damage the valve body, drums, and torque converter. Failure typically occurs in higher-mileage 2008-2012 builds.

This issue also affects: Buick Encore GX, Buick Regal, Cadillac Escalade

Common Symptoms

  • Sudden loss of 3rd, 5th and reverse gears
  • Slipping or no movement
  • Harsh or no shifts
  • Check engine / transmission warning light

How to Fix

Disassemble and rebuild the transmission with an updated/stronger wave plate, plus replace damaged hard parts and clean out debris; in severe cases a remanufactured unit is installed.

Typical repair cost:$2,500 - $4,500

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On the 2008-2017 Buick Enclave, the 3.6L V6 in the Enclave is known for water pump failure, attributed in part to dissimilar metals in the pump that expand and contract at different rates and eventually allow coolant to seep. Owners frequently find coolant puddling after the car is parked and may see overheating if the leak is severe. It is considered a fairly routine wear item on this engine.

Common Symptoms

  • Coolant puddle under vehicle after parking
  • Low coolant level / frequent top-offs
  • Overheating or rising temperature gauge
  • Sweet coolant smell

How to Fix

Replace the water pump (and thermostat/gasket as needed), then refill and bleed the cooling system. A relatively common, moderate-cost repair on these vehicles.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Engine Water Pump
    Cross-refWPGM-611V

    Aisin WPGM-611V. The article directly prescribes the water pump, and Aisin WPGM-611V covers every reviewed 2008-2017 Enclave year with exact product identity.

    eBay

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$495 - $1,100

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On the 2008-2017 Buick Enclave, enclaves commonly suffer failed HVAC blend-door actuators, with the plastic internal gears stripping or the small motor dying, often after about 80,000 miles. Because multiple actuators control temperature blend, vent direction, and recirculation, a failure leaves one zone stuck hot or cold, or produces a clicking/knocking sound behind the dash. The part itself is inexpensive but labor varies widely by which actuator failed.

This issue also affects: Chevrolet Malibu, Cadillac XTS, Chevrolet Camaro

Common Symptoms

  • Clicking or knocking noise behind the dash
  • One side blows hot while the other blows cold
  • Air won't change between vents/floor/defrost
  • Temperature stuck regardless of setting

How to Fix

Replace the failed blend-door actuator and recalibrate the HVAC system. Some actuators are easy to reach; others require significant dash disassembly, which drives up labor.

Typical repair cost:$200 - $600

Research This Issue

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NHTSA Recalls12 recalls

AIR BAGS:FRONTAL

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.

Campaign #21V78200007/10/2021

SEATS

General Motors LLC (GM) is recalling certain model year 2016 Chevrolet Traverse, GMC Acadia, and Buick Enclave vehicles manufactured November 6, 2015, to November 12, 2015. The affected vehicles have a the third row left lower seat frame that may have welds that are not in the correction location.

Campaign #15V83300011/12/2015

VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

General Motors LLC (GM) is recalling certain model year 2016 Chevrolet Traverse, GMC Acadia, and Buick Enclave vehicles manufactured August 18, 2015 to September 24, 2015. Due to a manufacturing defect, the windshield wiper motor may overheat when used.

Campaign #15V60900029/09/2015
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Other Buick Models

Buick Encore25Buick Cascada22Buick Regal13Buick Envision12Buick Encore GX12Buick LaCrosse11

Frequently Asked Questions

What are the most common Buick Enclave problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2011 Buick Enclave has 7 documented issues. The most frequently reported are: Loss of Power Steering Assist (Pump Wear), Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329, Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption. Of these, 5 are rated critical and should be addressed promptly.

Is the Buick Enclave reliable?

The 2011 Buick Enclave has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 5 issues are rated critical: Loss of Power Steering Assist (Pump Wear) and Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329 and Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption and Stretched/Worn Timing Chain on 3.6L V6 and 6T70/6T75 Transmission Wave Plate Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Buick Enclave problems?

Repair costs for known Buick Enclave issues range from $0 to $6,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2008-2011 Buick Enclave Loss of Power Steering Assist (Pump Wear)?

2008-2011 Enclaves (and platform-mates Acadia/Traverse/Outlook) can develop a power steering pump wear condition that causes an intermittent drop in hydraulic pressure and sudden reduced or lost steering assist. The vehicle reverts to manual steering requiring much greater effort… Severity: high.

What is the 2008-2011 Buick Enclave Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329?

GM Special Coverage Adjustment 14329 — extending warranty to 10 years / 150,000 miles — covers 2008-2011 Buick Enclave, 2007-2011 GMC Acadia, 2009-2011 Chevrolet Traverse, and 2007-2010 Saturn Outlook for power-steering pump wear that causes intermittent drop in hydraulic pressur… Repairs typically run $0-$1,400. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

General Motors, LLC (GM) is recalling certain 2014-2017 Buick Enclave, Chevrolet Traverse, and GMC Acadia vehicles. The driver's air bag inflator may explode during deployment, due to a manufacturing defect.

Campaign #23V33400010/05/2023

AIR BAGS:CRITICAL FASTENERS

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.

Campaign #21V24600008/04/2021

+ 7 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2008-2012 Buick Enclave Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption?

Early Enclaves (2008-2012, plus shared Traverse/Acadia/Outlook) with the 3.6L LLT direct-injection V6 share LaCrosse's timing chain stretch and a separate excessive-oil-consumption issue. The PCV system pulls oil into the intake, intake valves carbon up (no port injection to wash… Repairs typically run $2,500-$6,500. Severity: high.

What is the 2008-2013 Buick Enclave Stretched/Worn Timing Chain on 3.6L V6?

The 3.6L (and 2.8L) high-feature V6 in 2008-2013 Enclaves is prone to timing chain stretch and worn chain guides/tensioners, sometimes appearing as early as 40,000-60,000 miles. As the chain elongates, valve timing drifts, triggering misfires and a rattle at idle/startup; if a ch… Repairs typically run $3,200-$3,400. Severity: high.

What is the 2008-2012 Buick Enclave 6T70/6T75 Transmission Wave Plate Failure?

First-generation Enclaves (2008-2017) use the 6T70/6T75 6-speed automatic, whose stamped-steel 35R wave plate can crack at the teeth after enough shift cycles. When it fractures, the transmission abruptly loses 3rd, 5th, and reverse gears, and debris can damage the valve body, dr… Repairs typically run $2,500-$4,500. Severity: high.

What is the 2008-2017 Buick Enclave Water Pump Leak / Coolant Loss on 3.6L V6?

The 3.6L V6 in the Enclave is known for water pump failure, attributed in part to dissimilar metals in the pump that expand and contract at different rates and eventually allow coolant to seep. Owners frequently find coolant puddling after the car is parked and may see overheatin… Repairs typically run $495-$1,100. Severity: medium.

What is the 2008-2017 Buick Enclave HVAC Blend Door Actuator Failure?

Enclaves commonly suffer failed HVAC blend-door actuators, with the plastic internal gears stripping or the small motor dying, often after about 80,000 miles. Because multiple actuators control temperature blend, vent direction, and recirculation, a failure leaves one zone stuck… Repairs typically run $200-$600. Severity: low.