STARTER PROLEMS? on 2000 Chevrolet Express 3500

WHEN STARTING ENGINE, KEY IS RELEASE WILL HEAR WINDING NOISE
AND MOTOR IS RUNNING, AND I TURN KEY ON OFF AND STILL YOU CAN HEAR THE WINDING SO I TURN KEY ON AND A SHORT WHILE
LATER YOU CAN HEAR THE WINDING OFF. WHAT THIS TELLS ME?

Asked by for the 2000 Chevrolet Express 3500
Try to locate the source of the noise, that will help to better understand what might be going on here.