Posted By: Lawn Monkey
4x4 Auto hubs *DELETED* - 09/24/13 03:49 AM
Post deleted by Tower Rat 95B
4x4 Auto hubs *DELETED*
Posted By: 71yelladustr
Re: 4x4 Auto hubs - 09/24/13 04:35 AM
They do not have any hubs actually. The wheel hub assembly is splined and the axle slides through it and is secured by a large nut. Meaning they work well and are trouble free. The only downfall is the axles turn all of the time regardless if it is in 4x4 or not. The outer axle u-joints fail more often because of this. As for fuel mileage, im sure it hurts somewhat but isnt enough to warrant putting a $3K kit to help out IMHO.
Posted By: 340SHORTY
Re: 4x4 Auto hubs - 09/24/13 09:47 PM
The downfall is the uni bearing style of hubs. 
Yukon has conversion kits starting around $1,750.. 
Yukon has conversion kits starting around $1,750..
Posted By: NITROUSN
Re: 4x4 Auto hubs - 09/24/13 11:02 PM
Quote:
The downfall is the uni bearing style of hubs.
That is debate able.
So now you are out 1,750 to 2 grand plus labor. With the conversion kit you have maintenance. Pack bearings, replace seals and any other parts that could fail. You might get better mileage. You now have to get out of the truck and lock and un-lock them. You also have the possibility of locking hub failure which means no four wheel drive.
The unitized bearings have no maintenance. You could replace 10 to 20 bearings for the 1,750.00. No hubs to lock or unlock. Four wheel drive most likely will continue to work. You might lose a little fuel mileage.
To me its a no brainer. Leave it alone. My last truck had one unitized replacement in 150,000 miles.