Tryed my 4x4 for the first time,noticed a rubbing sound when braking in the snow. Took it out of 4x4, and it's worse in 2WD. I came to a red light and tryed to stop, it was making a shuddering sound and the brake pedal was pushing back!. I have not noticed this on dry payment, only on slick roads. It seems are Titan's have chronic brake issue's,don't know what too do!