Carrier Bearing movement and replacement?

How much movement should the carrier bearing allow for the driveshaft? When I place my truck in reverse and back up something in the driveline is squeaking loudly. It only happens when actually in reverse, not in neutral and not in drive. The ujoints are all newly greased. I can move the driveshaft up/down/back and forth at the carrier bearing so I'm wondering if it needs replacing.

2nd question: if it does need replacing is it worth getting an oem toyota brand or are the cheaper types still ok to use?

 

How many miles on it?

A new one will have a little movement to it, but not much. If you can easily move yours, it might need to be replaced. Kinda hard to diagnose without seeing the truck in person though.

I went through this a few years ago, and ended up going with a new OEM unit. It ended up not being my problem (my rear diff was failing), but it at least reset the clock on it.