A Guide to the Power Steering Pump for the 2008-2017 Buick Enclave
Address whining noises and a stiff steering wheel by understanding the common issues and replacement options for your Enclave's power steering pump.
- Power steering pump failure is a widely reported problem for the 2008-2017 Buick Enclave.
- Key symptoms include whining noises when turning, a stiff steering wheel, and fluid leaks.
- A GM Technical Service Bulletin advises using special fluid (Pentosin CHF202) in extremely cold climates to prevent pump and hose damage.
- Properly bleeding air from the system after installation is critical to prevent noise and damage to the new pump.
Is Your Buick Enclave Power Steering Pump Failing?
Power steering pump failure is a known issue on the first-generation Buick Enclave. If you're starting to notice changes in your steering, the pump is one of the first places to look. Ignoring the symptoms can lead to a complete loss of power assist, making the vehicle difficult and unsafe to steer.
Common Symptoms of a Bad Pump:
🎬 Watch: How to diagnose steering noises and stiffness- Whining or Groaning Noises: A distinct whining sound that gets louder when you turn the steering wheel is the most common symptom. This is often caused by low fluid, air in the system, or the pump itself wearing out.
- Stiff Steering Wheel: The steering wheel feels heavy and difficult to turn, especially at low speeds or when parking. This can be an intermittent problem that worsens over time.
- Squealing During Turns: You may hear a loud squeal when making sharp or full-lock turns.
- Visible Fluid Leaks: Finding reddish-brown fluid puddles under the front of your Enclave is a clear sign of a leak. The pump itself can leak from its main seal.
Known Issues: TSB for Cold Weather & Fluid Leaks
General Motors issued Technical Service Bulletin (TSB) #13-02-32-001G for the 2012-2017 Enclave. It warns that in extremely cold temperatures (below -31°F / -35°C), the standard power steering fluid can thicken. This increases pressure in the system, which can cause damage to the pump, hoses, or steering gear, leading to leaks and whining noises. If you live in a very cold climate, the TSB recommends flushing the system and refilling with a specific cold-weather fluid (Pentosin CHF202) to prevent this issue.
Choosing the Right Aftermarket Power Steering Pump
When replacing the pump, you have options ranging from budget-friendly to premium new parts. Since this is a common failure point, choosing a quality replacement can save you from doing the job twice.
🎬 See this step-by-step Enclave pump replacement walkthroughTier 1: Premium New Aftermarket (PWR)
Brands like PWR specialize in 100% new power steering components, not remanufactured ones. They are engineered to meet or exceed original equipment (OE) specifications and often come as a complete kit with the pulley pre-installed and new seals, which simplifies installation. While they are at the higher end of the aftermarket price range, their reputation for quiet operation and reliability makes them a strong choice for a long-term repair.
Tier 2: Remanufactured (BBB Industries)
Remanufactured pumps from brands like BBB Industries are a mid-range option. These are original units that have been rebuilt with new seals and inspected components. However, quality can be inconsistent. While some users report good experiences, others have received poorly rebuilt units that failed prematurely. This can be a cost-effective choice, but it carries a higher risk than a new pump.
Tier 3: Economy New (Replacement)
"Replacement" branded parts are typically the most affordable option. These are new, non-OE parts designed to be a direct-fit, low-cost alternative. While they can restore function, their long-term durability and performance may not match that of premium new or even quality remanufactured parts. This is a viable option for those on a tight budget who need to get their vehicle back on the road.
Pro Tip: Replace the Pulley and Bleed the System
Many aftermarket pumps do not include a new pulley, which must be carefully removed from the old pump and installed on the new one using a special puller/installer tool. To avoid this hassle, consider buying a pump that comes with the pulley pre-installed. After installation, it is critical to properly bleed all air from the power steering system by turning the wheels lock-to-lock with the engine running. Trapped air will cause persistent whining and can damage the new pump.
🎬 Watch: How to correctly bleed air from the systemPower Steering Pump Replacement Cost for 2008-2017 Buick Enclave
| Part Type | Estimated Part Cost |
|---|---|
| New Aftermarket | $120 - $288 |
| Remanufactured | $90 - $180 |
| New OEM (ACDelco) | $130 - $250 |
| Shop Labor | $465 - $682 |
Cost estimates are approximate and can vary based on location, brand, and vehicle condition.
Frequently Asked Questions
Can I drive my Enclave with a failing power steering pump?
You can, but it is not recommended. The vehicle will revert to manual steering, requiring significantly more effort to turn the wheel, especially at low speeds. This can be dangerous in emergency situations or when parking.
Do I need special power steering fluid for my Buick Enclave?
For most conditions, standard GM-approved power steering fluid is sufficient. However, if you live in a region with extremely cold winters, GM issued a TSB recommending the use of Pentosin CHF202 fluid to prevent system damage from fluid thickening at low temperatures.
What is the difference between a new and a remanufactured pump?
A new pump is made entirely from new components. A remanufactured (reman) pump is an original OE core that has been disassembled, cleaned, and rebuilt with new wear-and-tear items like seals and O-rings. New pumps generally offer higher reliability, while reman pumps can be a good value if rebuilt to high standards.
Why is my new power steering pump still whining?
The most common reason for a new pump to whine is air trapped in the system. The system must be properly bled after installation. Other causes could be a restriction in the power steering hoses, using the wrong type of fluid, or, in rare cases, a defective new pump.
Helpful Videos
Technical Specifications
OEM Part Numbers: 20954812 25939259 20976855 19329450
Hydraulic pump, belt-driven. Requires specific pulley for 3.6L V6 engine. System uses standard power steering fluid or Pentosin CHF202 in extreme cold per TSB 13-02-32-001G.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Buick Enclave:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Buick Enclave Power Steering Pump Failing?
- Common Symptoms of a Bad Pump:
- Known Issues: TSB for Cold Weather & Fluid Leaks
- Choosing the Right Aftermarket Power Steering Pump
- Tier 1: Premium New Aftermarket (PWR)
- Tier 2: Remanufactured (BBB Industries)
- Tier 3: Economy New (Replacement)
- Pro Tip: Replace the Pulley and Bleed the System
- Power Steering Pump Replacement Cost for 2008-2017 Buick Enclave
- Frequently Asked Questions
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