TOYOTA BRAKE PEDAL VIBRATE

My Truck Runs Great Transmission Shifts Smoothly, But Once I Get Exactly At 45 Mph I Feel A Bit Of A Vibration On My Pedal And Floor. Then...

My Accelerator Cable Broke, My Mechanic Replaced It With A "duplicate" From The Salvage Yard As This Part Is No Longer Available. I Now...

Brake Pedal Vibrates When Stopped At The Red Light. If Switch The Gear To N Or P Vibration Goes Away. It's Not Vibrating While Stopping...