Over the weekend I had to make a trip from the panhandle of Florida to Little Rock, Arkansas and back, roughly 1300 miles round trip. After dropping the GF off at her house I was walking back to the car and fired it up using remote start (factory system). Less than 30 seconds later the engine shut off and would not restart with the remote. I cranked it with the key and the CEL was on. Went ahead and drove it home the remaining 15 miles and other than the light being on there is no sign of a problem. Ran the codes and it is showing a P0171. I checked the easy fixes from other threads about the oil dipstick, loose oil cap, and the fuel filler cap. None of those seem to have fixed the problem. I cleared the code and it went about 10 miles before the light came back on. I've heard some talk of a PCV problem or possibly a Valve cover problem. Any thoughts or insight to this would be greatly appreciated! I still currently drive the car daily and there are still no signs other than the CEL being on that point to any problems.
By the way it is a 2011 Cruze LTZ Auto. Approx. 60k miles
Thanks in advance!