Will wheels off of a Chevrolet Colorado fit on 2001 Silverado 1500?

No, the wheels from a Chevrolet Colorado will not fit a 2001 Silverado 1500. The Colorado has a 6-lug wheel bolt pattern, while the Silverado has a 5-lug wheel bolt pattern. This means that the wheels from the Colorado will not be able to be mounted securely to the Silverado's hubs.