Absolutely nothing at all. This truck runs absolutely wonderful. Chevrolet has been in my family since 1956 and will continue for many years to come. We have owned several chevy trucks, suv's, and cars. I will never buy anything else.
Truck has a lot of stock horsepower, way more that stock ford or dodge. Very reliable and unbelievably comfortable. Way to go chevrolet!!
While I do not disagree with your opinion, I wonder how useful it is given the fact that you've only driven it for 6K miles.
Several GM trucks owned and that many GM Vehicles since 1956 is certainly enough. I have only owned 2 Silverados since 2004 and only sold to go larger. Both no issues whatsoever and handle and perform very well. I also own a new GM SUV which is equally nice as well.