The front wheels are actually 10 holes with a plate covering 5 of the holes. If your GMC wheels have 5, the lug size is larger and the bolt circle is different, that is unless you actually have the same thing, 5 lug wheels with a plate on the fronts.
You need to link photos to the site, not post them directly. You can do this through any number of the photo hosting sites available.
Welcome to the 'bolt!
Jeff
