2008 Tacoma issue

There is a weird sound coming from the right front of my truck. It happens when I drive over bumps to fast, doing like 5-10MPH over bumps, my front end drops or raises up to fast. Bumps are like potholes, speed bumps, ruts, rocky roads, etc. I can't figure out if it's an electrical or hydrolic type sound but it sounds like a vroom and it's not the RPMS. I think it has something to do with the ABS system but it happens when I'm not using the brakes. The noise normally doesn't last long, maybe 3 seconds. One time it lasted for several minutes due to the extremely bumpy hill I was driving down. The sound went from the normal vroom to a cell phone vibrating on plastic type noise. I talked to the dealer and they couldn't help me. Anyone have any thoughts on this? Thanks

 

Sounds like ABS. My o8 does it all the time on rutted bumpy roads but pretty sure it's when I'm applying at least some pressure to the brakes. Will have to pay closer attention and see if it does it wo brake pressure.