I have them on my car and they don't rattle. The factory set has rubber seals that sit on the window to reduce vibration. The clips attach to the window by just clipping on the edge and sticking to the glass with double sided tape. No drilling, no removing the hatch mount screws. If you get a set that requires the hatch mount screws to be removed, be sure to not overtighten them. The hatch glass will shatter when the hatch is closed or if you hit a pothole too hard.
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87 IROC 350 TPI with less than 10k original miles
93 Z28 Pace Car #494 of 645
My IROC Website Northstar Camaro Club of Minnesota