2017Tahoe 4x4 making weird low hum - front left

[OR VietVet]

Your interior controls may say the AWD is not engaged but maybe it is. Damn things lie like a dog, all the time.

 

[tungsten]

Your interior controls may say the AWD is not engaged but maybe it is. Damn things lie like a dog, all the time.

View attachment 384054

Time for a brake stand test,

 

[TahoeFL2017]

Tow/haul I made sure was off by holding down the button for a full 10 second count

AWD is noticeably different when I turn on/off so that’s eliminated

Friend is a Service Manager and off tomorrow so he’s going to drive it hopefully he can figure it out based on his experience

Update tomorrow!

 

[TahoeFL2017]

Friend drove it, thinks it's a tire, so off to Tire Kingdom to rotate/inspect under the tire warranty. Update later, might be a tire, or if not it's time for the dealer.

Still can't get the noise to change by swerving , so tire is most likely at the moment.

 

[TahoeFL2017]

Update - tires rotated, noise is still there, maybe slightly better?

Thinking bearing or hub in the very beginning of failure, doesn't vibrate or pull, just a low humming noise, gets worse after driving 20 minutes or so.

 

[OR VietVet]

Could still be something in the diffs that is "throwing" noise around.

 

[Blackcar]

Getting a weird low hum, not loud but annoying, seems to be from the Driver's side front wheel, nothing looks amiss though

No pulling or shaking, and the caliper doesn't appear to be dragging, so shouldn't alignment or brakes, truck just feels "heavy" , checked tire pressure, put in premium gas, etc

Recently put about 10k miles on newer tires, is this maybe a big nothing?

Tires breaking in weird maybe?

Feels like a slight drag, almost like the 4x4 is on, but not quite that much - just enough to be noticed

Any ideas?

Is this a 8speed automatic and what is mileage?

 

[RST Dana]

I had a bad bearing on the rf of my 17 a few Mike’s ago. Probably around 50k on it. No pulls, only a slight roar when coasting.

 

[TahoeFL2017]

6 speed auto, sounds like I need to go the dealer and get it checked out.

 

[TahoeFL2017]

Update - after hearing a rattle on startup over the weekend, I've concluded this is a exhaust issue, either a clamp rattling or something else that is loose.

Tires checked out, hub/bearings aren't looking like their the problem, and now that I think it's exhaust, it sounds more like it every day, and I'm going to get it checked out up on a lift.

I think I noticed it more as the weather cooled off, as I stopped having the AC on blast like all summer, so the cabin is quieter.

Appreciate all the replies, this forum is great, and if it's anything besides exhaust, I'll update.