All of the wheels on the truck have a little play in them which i assume is normal. but it seems i have a little more in the rear. Especially on one side, the wheel kinda of tilts in. Nothin seems to be be broken or bent. Could it be wheel bearings or drive cups or what? Any help would be greatly appreciated.
could indeed be the bearings.
could also be a spacing issue. the hole in the stub axle that the drive pin goes threw should be almost flush with the ball bearing on the outside of the wheel hub. But if its out a tad further, then you get some play. A washer or shim can take up the slop. Careful its not too thick, as that will make the wheel drag.
Sometimes the wheel hubs get a bit of slop in them, where the ball bearings press in. a bearing cant do its job if its not tight in the hub.
You will want to check over those things and replace if needed. Play can damage the dogbone.
If no one part seems to be in fault, then just run it as is. Alittle play wont break anything right away. But if you find a bad bearing, replace it ASAP.