I installed some rear mud flap/splash guards over the weekend.
. These were the cheapest HHR rear mud flap I could find. Unfortunately they were not model specific
(ad stated for HHR
but was actually a 'universal fit')
. They came with a bag of self tapping screws that you are supposed to drill out your fenders to fit. I did not want to drill any extra holes in my HHR so I utilized two of the fender well trim panel screw holes to mount mine. As you can see in this pic:
Getting the flaps set at the right height (not hanging too low or set too high) & angled straight was a real test for me on this project. I must've taken them on & off a dozen times to re-drill and/or cut to fit. I'm still not 100% set on the current position