My trucks brake pedal pulsates when I make a quick turn (either left or right) especially when going down a hill like the antilock brakes are engaging but I get no light or anything and it happens sometimes when I NOT braking. Any ideas?

Thanks for your help.

 

Could be a severely worn front end part, I'd be having it looked at by a pro just so you're safe. Abs will not actuate unless you're on the brake, this sounds like a really worn tie rod end or something.

 

It is most likely you need new calipers or rebuild the ones you have with new seals and new pistons the phenlic pistons swell up over heat cycles and age I just went through the same thing on my 2001