Toyota Sequoia Noises

Had A Shop Change Timing And Water Pump They Also Did Valve Work On Four Valves On Drivers Side Due To Valves Being Bent After Botched...

In The Morning When I Put The Key On, I Hear A Humming Noise, After I Start The Engine And Raised For Few Seconds The Humming Noise Stop....

There Is A High Pitched Whistling Sound Coming From Where The Brake Pedal Goes Thru The Firewall. Does Not Occur When Brakes Are Applied...