Did a quick search but didn't find anything (should I be looking in SD forum?)

Shocks have been replaced about 10k miles ago. Also replaced one rear spring when it cracked. Truck is pretty much stock. I noticed recently that when driving around 35-40 if I hit the brakes at about 60% of "stomp to the floor" pressure, the front end bounces like crazy until I hit about 30 and then it calms down. I can also let up on the brake until I'm under 30 or brake harder to get under 30 faster. Doesn't seem connected to the road condition.

Is this a rotor issue, pad issue, shock issue, alignment issue, or something else?

In the past 2k miles I did change the seals, bearings, and hubs up front (courtesy the help on this site) and did not get an alignment - I don't drive it much. Is this the problem?

 

can't help you, but mine does the same thing.

 

Funny how you mention that I just did new factory rotors, pads, seals and shocks and mine still does the same exact thing. I just thought my rotors where warped real bad.

 

There was a discussion about this last week I think. If I remember correctly, this was one of the possible cures.

http://guzzle.rbmicro.com/cu.html