truck bounces when climbing sand hill?

Hey guys,
I got a Prerunner TRD with the factory e-lockers.

I have very little knowledge about offroading when it comes to trucks, but this time of year I find myself going out more often into the gravel pitts to go dirtbiking.

Ive noticed when I am exiting the pitts, there are a couple sandy hill climbs that are required.

The problem I run into is sometimes when I get about half way up the hill or try to get my speed up the rear of the truck almost feels like its bouncing to the point the entire truck is vibrating. This happens more so when the rear is locked, but it can happen if it isn't as well. I only experience this on sand hill climbs, not normal driving.

Is this normal? I'm curious as to if it's just the truck losing traction and grabbing and losing then grabbing again, or if any suspension work can remedy this etc. Is it my shocks?

What do you offroad guys think?

It happens if I'm loaded up with weight or not. I should also note that I have the air-lift air bags in the rear as well to help when I'm loaded up, but my truck had the same problem before and after the installation of the air bags.

 

I think its the nature of going through sand with the tires spinning fast, you might be experiencing wheel-hop. You might try lowering the tire pressure as a quick fix (if that works), if not you might try looking into traction bars or anti-wrap bar. Maybe someone who plays in alot of sand will chime in on this.

 

"Wheel-hop" describes my problem very well. Thanks for the response. It's extremely uncomfortable when this happens, so much so that I end up going slower than need be, resulting in often more than one try up the hill

I'd say its not really a speed issue, rather it only happens when I finally start to lose traction

 

Happens to everyone, pretty much on all terrain. If you're going to be doing alot of off roading get an anti wrap bar and wheel it, it will still happen, just not as bad.