MY VEHICLE ENGINE LIGHT COMES ON AND THE GAS NEEDLE BOUNCES BACK AND FORTH. WHEN THE NEEDLE BOUNCES BACK AND FORTH FROM FULL TO EMPTY THE ENGINE LIGHT IN THE DASH WILL COME ON AND MAY STAY ON FOR AWHILE BUT WILL THEN GO OFF. WHEN I PUT FUEL IN THE TANK THE LIGHT WILL GO OFF BUT ONCE I START DRIVING AGAIN IT COMES BACK ON AND THE NEEDLE BOUNCES BACK AND FORTH. NOT SURE WHERE THE PROBLEM IS BUT I KNOW MY BROTHER IS HAVING THE SAME PROBLEM WITH HIS SILVERADO. PLEASE LET ME KNOW WHAT I NEED TO DO. THANKS FOR YOUR TIME. *TR