Hopefully you can replace those "Guide Clips" But, if you find other damaged plastic parts -or- a problem with the Motor itself -or- snapped the cable, etc...? ...You could purchase a full replacement "window regulator" and framing from Amazon. Just figure out what pieces are damaged. But, just as Jiovanni12 said, it's more than likely the "Guides".
I did both sides (drivers & passengers). Pretty easy once you do one. *Hint... Just don't foget to "re-plug" the electrical harness to the motor. I forgot both times !!! pretty funny. had to remove the whole thing again.
====>> If someone needs a "detailed" picture of the window regulator, parts and framing assembly ???
I still have my old one, that I could take pics of for anyone who needs it, for whatever. If so, Reply.