I have a 2004 4cyl. Allero. I went to start it at lunch and at first it started to turn over and then died. When I tried it again it turned over for a few seconds but never cranked. The third time I turned it over and it started up. I thought maybe the battery or the starter but after the second try where it turned over but would not crank I discarded that theory.

Can someone PLEASE help!

 

Ground cable is loose take it loose from the battery and clean it then put it back on and tighten.