It’s cold in Texas this week as y’all know. I have had my truck plugged in but it is outside under a carport. I went to start it today and it had a check engine light on. I thought it was just cold so I have left it at idle for a while to warm up. When I tried to move it beyond a slow idle it will die. OnStar ran a diagnostic and it shows P018B for the fuel pump. My truck only has 2900 miles and the tank is full. Could the cold we have be experiencing have anything to do with it? Thick Diesel? Edit: There is also a high pitched wine/whistle coming from under the fuel tank, it sounds like. Sent from my iPhone using Tapatalk