Tire Pressure Monitoring System problems of the 2007 Chevrolet Impala

We purchased our 2007 Impala ss on 11/17/09 with 33,003 miles on it. On July 20, 2011 while driving home from work with my wife and stepson on the I-94 freeway in clinton township, mi. , the leftside rear tire blewout. We notice that it had broke the inner plastic piece and bent the muffler tip and there was clearly no rubber left on the inside of the tire all you saw was wires. Had to put our spare tire on. Took the car into the tire shop on July 22, 2011 to have that tire replaced, service guy said there was no rubber left on the inside of the left tire in the rear, and the wires were clearly visible and showed us them, which we had noticed when this occured. He also stated that on the rear rightside the wires were showing too. We had him replace all 4 tires on the vehicle. He also stated that we had been the 4th Impala they had replaced tires on in the past week. While on the lift we noticed that the back tires were slightly leaning out, like (/) left side and (\) right side, I told him that I want the tires back and he gave them to me. We took them home and took picks of them and the back of our car to show how the tires were still leaning out, and also took pictures of where the plastic had been broke in the wheel well. This has happened in less than 20,000 mile since we purchased the vehicle. I went to the dealership that we purchased the vehicle from and told the service guy what had happened, he stated that there was no recall as of yet on this problem but that other people had came in with the same complaints, that I should get ahold of gm and see what they say. He told me that he was aware of the police vehicle that had been recalled but as of yet knew nothing about all others. He stated that he wished he could do something for us but there was nothing he could do. When is gm gonna do something about this?.

I had my 2007 chevy Impala lt serviced at dyer chevy (vero beach,FL. ) and since then the tpms warning light has been coming on and off daily. Went in a few weeks later to have sensor reset and it stopped for a couple of days. Went in on 9/11/08 and had a detailed check while tpms light was still on and got news that the sensor was bad and had to be replaced, as well as the 2 remote transmitters, since they would not work with the new receiver at a cost of $600 plus dollars.

We purchased our 2007 chevy Impala brand new January 07. Since then within a year we have already replaced 2 tires that were bare on the outside part of the tire. The tire monitor service always pops on the display saying tire pressure off almost daily. We've taken it back to our chevy dealership on several occasions for them to check. They have re-set this monitoring thing several times, re-aligned the car, replaced 2 tires (at our expense). Right after this last time we took it in, the next day the warning popped up saying right rear tire pressure was at 58!, I thought my tire was going to blow up. Parked it to go into business, within about 20 min came out and started and tire was normal? several times the light flashes "tire monitoring system service soon" it rides very bumpy even after replacing bad tires and re-aligning. We have taken this car in over and over and still no recall on this problem. I'm sorry but this is one out of several gm vehicles we've had, and gm is terrible at taking care of their customers when it comes to problems. This car has 34,000 miles on it, warranty ending soon, we are now trying to get rid of it because of the problems already with the tires, etc. I do not feel safe in this car and constantly the tire monitor flashes pretty much every day, then shut it off, sometimes it goes off, sometimes it doesn't. I do not feel safe, nor do I feel this is a reliable vehicle on a long road trip.