2000 gmc jimmy stalls when gas tank is on half or less

I had a problem just like that and what it was is that there is a fuel pick up on the fuel pump inside the gas tank. This came off the pump at some point and when it did the engine would stall out when ever I turned left or when I was on the breaks coming to a stop light, and this only happened if I had less than about 6 gallons of gas. I removed the tank and pulled out the pump and found the problem, I replaced it and have not had a problem since. Just to let you know the car was a 1992 Acura Vigor, but it sound like the same problem. I hope this helps.