I just replace my alternator I just replaced my battery and yet my car still shuts off and will start back up drive and shut off again what could be the problem

What is your question?

New alternator new battery I can drive for a little bit and then the Battery light comes on in the car shuts off it turns back on drives just fine and just shuts off again

How long has your 2003 Cadillac CTS had this problem?

2days