It depends on the deal at the dealer. GMC is usually more expensive and has a nicer interior. As we get older we buy trucks that are upscale. I've enjoyed the work trucks in the past, less problems with electrical problems, door locks, windows etc.
My 2017 Silverado with OnStar follows us around like a puppy. Aside from the wheel wells, I like the GMC, but would pick the Chevy as the dealer is closer to home.