Problems with 2002 Buick Century FUEL SYSTEM, OTHER

Began hearing popping noise across front, from wheel areas. took into dealer where i purchased the vehicle several times. they drove it and heard the noise but couldn't find what it was. kept getting worse and on 8/31/04, they contacted another dealership where they had a vehicle with the same problem. they supposed fixed it, but now it's doing it again. doesn't matter if the roads are wet or dry. now, another problem. on 5/28/05, i made a trip and stopped for fuel and went to a fast food place next to the gas station and while waiting for my order, an alert bell started dinging and my fuel gauge went down to the empty mark. i could not find anyplace open to get help (memorial day holiday). after driving about 4 miles down the highway, the gage came back to the full mark. it did not buck or act up before this happened. also, low tire light keeps coming on. tire pressure is ok.

On 12/12/03 after pulling into the local snappy carwash, our 2002 buick century would not crank the engine. the ignition would wind up but not engage the engine. we called our dealership, but because it was 44,000 miles on the car, and the 36,000 mile warranty is now up, there was nothing they were prepared to do to help us. we called other dealerships and they responded the same. we had to leave it and rent a car because of travel that could not be postponed. upon our return monday night, my husband decided to check if the car would start. it immediately started and ran fine for one entire day. on wednesday, 12/17/03, it quit again while on idle in front of our local wal-mart. nothing would make it start. while my husband was in the store to buy starting fluid to check if that would start it, i kept bumping the starter and finally it cranked. we have been told it is a common problem of fuel-pumps in these vehicles. we are now being charged over $500.00 for the fuel pump replacement and labor to do the service. can there be a rebate for us, since it is happening to others? this is a dangerous occurance, since we could be left stranded anywhere. thank you for your help.*ak