Lifter and Power Steering 2013 Yukon XL 2500 6.0

[Caymanboy]

I have a 3013 Yukon XL 2500 with a 6.0. Approx 45k miles.
It has a lifter "knock" and a power steering "whine" to it.
I run full synthetic and the dealer has "replaced" the PS pump once.
Now they are telling me the noises are "normal".
Any input from anyone?

 

[Matt_]

No PS whine on mine. Is it all the time or when you turn?

What's the knock sound like? An actual metal tapping sound? Mine makes a ticking sound that could be mistaken for an exhaust leak, but there isn't so I'm not worried. Have a few more years on the powertrain warranty so I'm just keeping an eye on it.

 

[Caymanboy]

It whines all the time. This is my third Yukon, although it's my first 6.0 2500.
The valve "Tick" gets louder as the oil ages, using full syn I can make it to maybe 50% before the "tick" becomes really noticeable.

 

[Matt_]

How many miles is 50% for you? I've only owned mine for ~6k, and did my first oil change at the 5k mark.

Might be worth searching Google for things like "L96 lifter noise"... it's a popular engine, but not as prevalent here. There may be more experience with 6.0L noises where the 2500 pickup trucks converge

 

[Caymanboy]

I contacted GM, they actually answered we shall see----.
Thank you for the advice.

 

[Matt_]

Let us know how it turns out