In the 2015 Buick Enclave, the power steering fluid reservoir is located in the engine bay on the passenger side near the firewall. It’s a small translucent bottle with a dark cap labeled "Power Steering" that you can see when you open the hood.
This article explains where to look, how to check the fluid level, what fluid to use, and safety tips for topping up without causing leaks or damage.
Where to find the reservoir in the engine bay
To identify the reservoir quickly, look for a translucent bottle with a dark cap labeled Power Steering. It sits toward the passenger side of the engine bay near the firewall and is usually easy to spot from the front when the hood is open.
- Translucent plastic bottle with a dark cap labeled Power Steering (P/S) or similar marking.
- Located on the passenger side of the engine bay, near the firewall and away from the radiator fan.
- May be mounted near other hoses and is sometimes shaded by surrounding components, so look for the label on the cap.
Once you can see the reservoir, you’re ready to check the level or prepare for a fill if needed.
How to check and top up the power steering fluid
Follow these steps to verify the fluid level and add more if necessary. Use the correct specification and avoid overfilling.
- Engine off and cold. Remove the cap and check the level against the MIN/MSX marks or the visible level on the translucent container.
- If the fluid is between MIN and MAX, there’s generally no top-up required. If below MIN, add slowly until you reach MAX.
- Use the recommended fluid: Dexron VI automatic transmission fluid (ATF) or the GM-recommended power steering fluid as specified in your owner's manual or on the reservoir label. Do not mix fluids.
- Reconnect the cap securely and, if advised, run the engine with the wheels straight to circulate the fluid before rechecking.
A tidy approach helps prevent leaks and keeps the steering system functioning smoothly.
Fluid type and cautions
Recommended fluid
Most 2015 Enclave models use Dexron VI ATF for the power steering system, or a GM-recommended power steering fluid as indicated in the owner's manual or on the reservoir label. Always confirm the exact specification for your VIN and engine because some early or late builds may vary.
Signs of trouble
Low fluid, whining noises when turning, stiff or jerky steering, or visible leaks around the reservoir or hoses can indicate a problem. If topping up does not resolve the issue, seek professional inspection to check for leaks or a failing pump.
Regular fluid checks help maintain steering performance and prevent damaging the system.
Summary
For a 2015 Buick Enclave, the power steering fluid reservoir is typically located on the passenger side of the engine bay near the firewall. Use Dexron VI ATF or the GM-recommended fluid, and keep the level between the MIN and MAX marks. When in doubt, consult the owner's manual or a Buick dealer for the exact specification for your vehicle.