Went to get my Yukon XL 2500 aligned and turns out the left front hub is loose. I'm handy-capable but I've never looked at one of these. Is it something I can just tighten an axle nut, is it a sealed bearing(s) that needs to be pressed in/out, what am I in for?
The truck has about 121k miles, so I'm thinking I may need to replace stuff if it's not servicable. But it's 4:15pm on a Friday afternoon....I'm screwed.
Thanks,
Michael

 

with that amout of mile i would replace both of them and it is not hard the dealership may be open on sat. about 45 min each side.put it on jack stands take off the tires take the brakes off undo the 13mm bolts should be 3 in a triangle shape comes out the back then put new one in and tighten everything up and move to the next one.

 

Thanks litereddevil for trying to help out.
Turns out they're sealed, unservicable, and retail for $377 at the stealership. Of course gmpartsdirect has 'em for $188 +S&H...
Oh, and while you're at it, order the dust cap for another ~$3 because that f*cker didn't want to come off.
Other than that, the caliper bolts are 21mm, the hub mounting bolts (4 of 'em) are 15mm, and the axle nut is 35mm. Oh, and don't forget to put the dust shield on the right way when you put it all together, or you'll be doing it twice.
Now that it's done, maybe it'll drive better...

Michael

 

Do you happen to have the part number for the cv assembly? I need to replace the driver side one because it is making clicking and popping noises. It is the whole assembly right all put together? The reason I ask is gmpartsdirect lists many different part numbers and I am not sure which one to get. Thanks

Alex