Never understood people that buy these trucks and worry about gas mileage. If that’s a concern for you than daily driving 20 year old American truck is just not a good idea. There’s thousands of cars And trucks made to get good mileage, obs chevys were never ever one of those.
I have the electronic push button 4x4. Any time I press the button to engage 4wd the transfer case goes into neutral and stays there, leaving me stranded. If you try and change gears it makes grinding sound.
Usually, I stand around and reset the battery a few times (truck wont start in neutral)...