If you or the delivery Dealer fills 6.2L Yukon tank with Regular Fuel instead of Premium, do you need to, or can you do a Fuel Computer reset? I had a 2011 Camaro SS w/6.2 Corvette engine and Forum had advised to remove Fuel Computer Fuse for short period of time to reset computer. This was after 2-3 tanks of Premium to purge tank. On the Camaro, Premium fuel achieved better gas mileage than Regular and at end of day, outweighed difference in fuel cost. Also getting full capability of engine, when you wanted to. If you did not do this reset, computer would stay set to Regular fuel, no matter how much Premium you put in it.