Too much In/Out play in axle? 2015 xl Denali

[07denaliyuk]

Doing rear brakes, I noticed the axle shaft moved in/out 2mm on passenger side making a large clunk when moved in/out

Passenger side in/out 2mm movement
Drivers side in/out 0.5 mm but still noticeable

Pulled cover, c-clip and axle out and It looks like there’s no way to adjust this. Axle looks good, Bearing looks good, seal will be replace.

Thoughts? advice? New axle shaft???

 

[OR VietVet]

There is nothing wrong with that play. If you wish you can get a new c-clip and put in there but it is ok. Looks like there is some scum there at the seal so I would replace those seals while apart, as you have decided-good call. If you had no play there the bearing would have constant pressure on it and would wear out quickly.