i have replaced my fuel pump 3 times in my 1991 corvette while only driven it less than a 1000 miles.i am the original owner with 55,000 miles i decided to take the car to the shop to make sure everything was running good they tuned it up fixed the a/c, trans fluid replaced ,coolant replaced all small stuff to make sure it was in good shape the car ran great i just wanted to keep it that way .when i went to pick up the car it died in their driveway it had no gas they got me gas and it died again they replaced the fuel pump 3 times since and the 3rd time it ran good and actually lasted a while but then it started to give me problems on and off sometimes it would start sometimes not untill it finally wont start at all.i know when it would work i could hear the fuel pump kick in if i dont hear anything i know there is a problem and it doesnt start .is somthing shorting out my fuel pump or my relay it cant be bad pumps what is causing my pump to die?