Hesitation Problem ?? 94 c1500 5.7 350
 

When i take off from a red light or stop sign i step on the gas and my truck hesitates to take off, when i do take off the battery light flashes on and off and my gauges go crazy. I've already replaced my fuel pump, fuel filter, alternator, battery and cables my fuel lines are good so i need any help to see what might be the problem ?? thank you