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I have a 2013 GMC 2500 Diesel. A year ago we took it into a local shop and had a DEF sensor replaced and a fuel filter. When we got it out of the shop, the fuel mileage was significantly worse and seems to have gotten worse yet. Prior to this, we would typically get 12-14 MPG pulling a loaded trailer. My last trip, I got 9 MPG. Have had it into the dealer twice. The last time they had it for days and have told me that there is absolutely nothing wrong. Does anyone have any idea why the mileage would have suddenly dropped so much?
While unloading on pretty days, set your fold out lawn chair in the shade and read a book. Park facing the east in cold weather, the morning sun will help warm the truck instead of cranking it, park facing east in summer so the interior cools off quicker. After pulling up after fueling, kill it again just in case you bump into a friend or get stuck in line. I need someone to write my uni assignment cheap uk