well my crossfire i just bought has 53k on it and i stopped at a light today and once i stopped my car started to jerk like it was going to die then light turned green and i pressed gas and all was fine for a mile up then got gas. My gas tank light was on but was only halfway if that in the red it was only on maybe 5-10 miles. Should i be worried about my car bcause i thought the light means you have 2 gallons of fuel left. has this happened to anyone?