My dealer screwed everything up on my account when my son bought his last truck from them, I had to go over there and sit down with a ba to straighten it all out 3 times and now his truck still shows up on my phone app for onstar, I gave up.
1st he DIC doesn't measure the amount of fuel flow, it measures miles to gauge readings so we all know the first 1/8 tank lasts longer than the middle 1/4 tank.. 2nd did this drop occur about the time the truck was leveled, lifted or new tires wee added?
I made this out of 1x4 aspen board a 6 foot piece will be long enough to build the frame then covered it a piece of left over leather/vinyl I had left over from a Katzkin kit and a console insert out of a 2014, all items found in my garage. Basically take some measurements of the floor space and build a simple frame to hold the insert and cover it. Mine is built so tight it doesn't move at all.
I am picking up a set of factory wheels this week for my stock OEM tires and will run them in the summer, that way my Duratracs will last a good long time, I removed my rear block to level the truck out, I am good with not being the tallest truck in the mall parking lot. I run the Dura's because I do 100 mile work commute every day regardless of the weather.