my car will start up but it wont stay started.. on 2004 Chevrolet Monte Carlo

I start it up but it won't stay started. This happened Saturday after I put gas in it. What could be wrong?

Asked by for the 2004 Chevrolet Monte Carlo
1 answer
Have the Alternator checked out . I had the same issue it was a bad Alternator after 5 years of service on my 2004 Monte Ls