Seems to work, easy install, missing screw

I recently ordered and installed this on my 2013 Malibu 23LSV. It is basically 4 rubber bushings with screws attached to the bottom of them that screw into the existing holes on the ECU mounting plate. The bushings then have a female hole on the other side that the new screws tighten into to hold your ECU in place. The unit is supposed to have 4 rubber bushings and 4 new screws (same length and thread as your OEM screws) but mine was missing a screw so I simply used one of the originals. The rubber bushings are supposed to eliminate vibrations that can be damage causing on the computer. For the price, it’s worth the added piece of mind that your ECU may last longer.