2007 GMC Acadia Q&A
2007 GMC Acadia Question: Power Steering noise problems.
We took our Acadia two weeks ago to have the timing chain replaced. Since then we have a whinning noise comming from the power steering. That too has been replaced. Our dealership has been so called burping the lines to get the air out. No luck. Any suggestions to make the noise stop? - Stephanie Melvin
If it really is the power steering pump that is continuing to whine, they may not have bled all of the air out. If there is any air the steering lines, the pump can whine. The replacement part may also just coincidentally be defective. The only thing to really suggest when it comes to power steering is to repeat the bleeding procedure (by the book) until all of the air is out of the system and make sure you have the correct amount of fluid in the reservoir. If the fluid has cavitated (tons of tiny bubbles) this can make it difficult to bleed and may just need to set a while until the bubbles settle out. Before driving it in the morning, check the fluid level and see where it is. If it is low, add the correct amount of fluid (check your manual to make sure you're getting the right stuff). I hope this helps! - Andy Y
It happened to my 2007 Acadia. I opened the hood then open the main engine cover cap to access the steering fluid. It shown under minimum. After I filled it up, the whinning noise is gone. My steering fluid did not show bubble. Some say that you can open the steering fluid cap, then have the engine runs for about 30-45 minutes. This may help to get the bubble settled down. There is another problem with the steering rubbing noise when driver turning the wheel either right or left. This is another problem and many people reported to have a new steering rack installed which costs around $1300. - paulms
I puchased my 2007 GMC Acadia as a second vehicle from a local dealer in October 2010. When I first test drove it, it made a crazy whinning sound that the dealer said was due to low power steering ...