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 2008-2010 Buick Enclave Excessive Oil Consumption / Engine Failure on 3.6L?

Higher-mileage first-generation Enclaves with the 3.6L V6 (worst on the 2008-2010 cars) can burn oil excessively, and in the most severe cases the engine fails outright, including reports of a hole punched in the block. The condition is linked to the same engine's timing-chain/oi… Repairs typically run $1,500-$6,500. Severity: high.

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.

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 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 2008-2017 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.

Buick · Known Issues

2009 Buick Enclave Problems: 10 Known Issues

2009 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2009 Buick Enclave has 10 documented known issues, with 8 rated critical. The most serious are Buick Enclave Shift Cable Adjustment Clip Recall (09V073000) — Vehicle May Roll Away, Heated Washer Fluid Module Can Ignite — Recall 10V240000, 6T70/6T75 Transmission Wave Plate Failure ($2,500-$4,500 repair), Excessive Oil Consumption / Engine Failure on 3.6L ($1,500-$6,500 repair), Loss of Power Steering Assist (Pump Wear), Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329 ($0-$1,400 repair), Stretched/Worn Timing Chain on 3.6L V6 ($3,200-$3,400 repair) and Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption ($2,500-$6,500 repair). Across all issues with published estimates, repair costs range from $200 to $6,500. DIY maintenance guides at .

All 10 Known Issues

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 2009 Buick Enclave has 10 documented issues. The most frequently reported are: Buick Enclave Shift Cable Adjustment Clip Recall (09V073000) — Vehicle May Roll Away, Heated Washer Fluid Module Can Ignite — Recall 10V240000, 6T70/6T75 Transmission Wave Plate Failure. Of these, 8 are rated critical and should be addressed promptly.

Is the Buick Enclave reliable?

The 2009 Buick Enclave has 10 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 8 issues are rated critical: Buick Enclave Shift Cable Adjustment Clip Recall (09V073000) — Vehicle May Roll Away and Heated Washer Fluid Module Can Ignite — Recall 10V240000 and 6T70/6T75 Transmission Wave Plate Failure and Excessive Oil Consumption / Engine Failure on 3.6L and Loss of Power Steering Assist (Pump Wear) and Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329 and Stretched/Worn Timing Chain on 3.6L V6 and Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption. 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 2009 Buick Enclave Buick Enclave Shift Cable Adjustment Clip Recall (09V073000) — Vehicle May Roll Away?

GM recalled 2009 Buick Enclave models under NHTSA campaign 09V073000. On some Enclaves the transmission shift cable adjustment clip may not be fully engaged, which allows the position of the shift lever to disagree with the gear the transmission is actually in. The danger is at t… Severity: high.

All 10 Known Issues

2008-2010 Buick Enclave: Excessive Oil Consumption / Engine Failure on 3.6L#

2008-2013 Buick Enclave: Stretched/Worn Timing Chain on 3.6L V6#

2008-2012 Buick Enclave: Enclave 3.6L LLT Timing Chain Stretch + Oil Consumption#

2009 Buick Enclave: Buick Enclave Shift Cable Adjustment Clip Recall (09V073000) — Vehicle May Roll Away#

2008-2012 Buick Enclave: 6T70/6T75 Transmission Wave Plate Failure#

2008-2011 Buick Enclave: Loss of Power Steering Assist (Pump Wear)#

2008-2011 Buick Enclave: Enclave Power Steering Assist Loss — Special Coverage Adjustment 14329#

2008-2009 Buick Enclave: Heated Washer Fluid Module Can Ignite — Recall 10V240000#

2008-2017 Buick Enclave: Water Pump Leak / Coolant Loss on 3.6L V6#

2008-2017 Buick Enclave: HVAC Blend Door Actuator Failure#

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