i have a 91 deville. it only seems to hesitate really bad when it is low on gas between 2-5 gallons in tank. It is reallt bad in turns seems like it is running outta gas. i replaced the tank last week because when i bought it had a small hole in it from something being ran over in the road. I bought it off a friend of mine is it possible that he didn't keep much gas in it because of the hole that maybe the fuel pump is buring out from not being keep cool enough. I changed the filter already was going to try the pump next and a new sending unit while i'm at it. Thanks for any help.