Hello, new member here. We just purchased a 2011 Traverse LT, only has 45,000 miles on it. So far I have had to replace the water pump, change out a heater actuator, and now I have just replaced the fuel pressure sensor because the check engine light was on, after they replaced it, two weeks later the check engine light came on again, so I took it back to the chevy dealer, and they replaced the fuel pressure sensor again. now only one week later the check engine light came on again. Is this a common problem with the fuel pressure sensor, or do I have a faulty gas cap, or do I need to clean out the fuel injectors. I am at a loss here, I will take it back to the dealer next week. Thanks for any input, I do love the car, just wasn't ready for so many things to need to be worked on at such a low millage.