Rear wheel bearing? - 99 Suburban C2500

[Pinger]

RA sell them - listed as C clips and as axle retainers. Only one of them states thickness (theGM ones) and is 0.2'' . Routine replacement part by the look.

1999 CHEVROLET C2500 PICKUP 5.7L V8 Drivetrain Parts | RockAuto

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1999 CHEVROLET C2500 PICKUP 5.7L V8 Axle Shaft Retainer | RockAuto

RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Easy to use parts catalog.

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[92GMCK2500]

Never eliminated the play, but the amount of play was reduced once I replaced the parts mentioned.

Yes, C clips, U shaped retainers - same part. Pic

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[92GMCK2500]

I can't speak to the wearability of those parts nor the thickness. I purchased GM genuine retainers. I compared the old retainers with the new ones, i couldn't see a visual difference. I don't have a caliper gauge...

I haven't used the truck much since doing the work.

 

[92GMCK2500]

I've got a video showing the in & out movement but don't know how to upload...

 

[Pinger]

2-3 mm is a lot of wear to suddenly occur (in a few thousand miles in my case) and if it is wear, there'll be swarf...

But there's no relative motion with the parts - all rotating a piece as they are.

Or, something shifts...

 

[Pinger]

I've got a video showing the in & out movement but don't know how to upload...

No need to. I've seen my own!

 

[92GMCK2500]

We might need to call in the reinforcements @Schurkey ... this is beyond my knowledge!

 

[Pinger]

We might need to call in the reinforcements @Schurkey ... this is beyond my knowledge!

You've read my mind! 'Waiting for Schurkey'!

 

[GoToGuy]

Have checked what the service manual requires or the unit repair manual?

 

[HotWheelsBurban]

There's a hardened bolt with a turned down part on the shaft that goes in that hole. Those bolts should be fairly easy to remove ( once it's out then you can move that round bar/pin and take the C clips out). Then the axles should pull right out. Haven't done this in a few years, and not on an 8 lug, but the 5 lug axle is similarly built.
That said, sometimes that bolt can break....and that's when it gets fun. Never had to personally deal with it, but I have read reports on here from those who have.