My motor is making a clicking almost knocking noise. The gauges flicker while going down and the lights are flickering. The battery is good I had it checked at the parts store and the alternator is good as well I had that checked as well. I am thinking maybe the starter? The clock in the head unit would reset every time I turned on the truck before it wouldn't start anymore. Other then that no other thing out of the ordinary happened.

 

Welcome to the forum. You need to check the quality of your ground cable and the ground strap from the engine to the body... sounds like you have a poor electrical connection..