Have you popped the trim panel off to take a look? Are you sure the clips broke? The more common failure is for the cable to break out of the bracket that moves the window up and down.
By clips, do you mean the metal clips with nylon inserts that are pinched together by a 10MM bolt? There are two of those. If it the same clip I am thinking about, you raise or lower the mechanism using the power window switch until you see the bolts. Then remove the bolt, replace the clip, and re-install the bolt.
If you get the trim panel off, take some pictures of what you think is broken and post them up.
2001 Bonneville SSEi (retired at 365,000 Kms.)
2014 Jeep Grand Cherokee Overland (yes, I know its not a GM)