2018 GMC whining noise drivetrain

[cowboy9]

I have 38000 miles and started whining most notions at 30-50 mph I hate to think but sounds like differential / ring pinion anyone else have issues?

[Hillwood]

Are you sure that it's not the tires?  Too many possibilities. You might need to have it on a hoist and listen to isolate it.  If the noise varies with the throttle, then it might be gears. If the noise just  varies with speed,  I would look at the tires. 

[cowboy9]

I have a second set tires I am going to put in to make sure not tires but I am 99% sure it not it is getting louder and tires are in good shape rotated every 5000 K

[RE1]

If your truck is a 4x4, check your autotrac setting to make sure that you are in 2 Hi and not in Auto 4. The transfer case will make some additional noise when in Auto 4. 

Edited May 19, 2019 by RE1

[cowboy9]

it is in 2H

[cowboy9]

It definitely in drivetrain I guess I take it and see what they day it appears in forums that this was an issue with some 2014 ring and pinion bearings etc unbelievable anyone else see this I newer years mine 5.3 3:42 gears limited slip

[lapoolboy]

7 hours ago, cowboy9 said:

It definitely in drivetrain I guess I take it and see what they day it appears in forums that this was an issue with some 2014 ring and pinion bearings etc unbelievable anyone else see this I newer years mine 5.3 3:42 gears limited slip

Huh?

[cowboy9]

Turns out to be wheel bearing I guess GM is making junk now and since I am at 38,000 and 1 year old it out of warranty who would think you buy a $59,000 truck and whell

bearing does not last but a year $700 I guess it time fo back to Ford 

[diyer2]

$700 

Dealer?

Fix it yourself for 1/4 of that maybe.

Ford or other brand could happen also.

[cowboy9]

Agree will be doing it for about $300 just irritating!