Will Canyon Wheels Fit Silverado?

Colorados and canyons use a bigger center bore so they shouldn't have any problems fitting. If you were trying to put Silverado wheels on a Colorado it would be a different story, you'd have to bore the wheel center out larger.

Will GMC Canyon wheels fit a Chevy Silverado?

as long as the rims are lug centric and big enough to fit over the brakes on the silverado.

Will 2018 Chevy Colorado wheels fit a Silverado?

Yes, your stock wheels will still fit, your not doing anything to the truck..