Chevrolet Equinox Engine Hard to Start

When U Started In The Morning The First 10 -15 Seconds U Could Hear A Loud Rathing Noise Then It Quites Down,if U Turned Off And Don't Wait...

It Takes 10 Plus Seconds To Engage And Often Will Finally Start After I Have Let Go Of The Key. Occassionally Is Does Not Start Until The 3...

Engine Does Not Start With Every Attempt. Battery Has 12.3 Volts. Alternator Puts Out 14.4 Volts. Lights, Radio, Etc All Work Fine. Turn The...