Based on my experience Utah roads are not kind to cars. And this time of year dirt, rocks and salt abound. In an effort to prevent inevitable paint damage I installed the available GM splash guards onto my car. The GM part numbers are 22935635 (front) and 22935639 (rear). I’m not sure why parts like these aren’t standard- they look great (to me, anyway) and I’m certain they will help prevent rock chips. My local dealer happened to have these in stock but they can be ordered from any store that sells GM parts.
Installation is super easy as these guards replace the ones already on the car. You need a socket wrench with a 7mm bit, 15 minutes and a flashlight is helpful. The installation process is the roughly same for the front and back. Remove the 7mm bolt that holds the original guard into place. There are five tension clips that secure it to the car. Gently pull the old part out starting the top.
On the rear guard transfer the clip nut to your new guard (the orientation of the clip doesn’t really matter as long as it’s centered- this is how mine looked when I removed the original part). When installing the new part note that there is a small tab that needs to go into the wheel well liner. Then simply align the push clips with the body and press them into place. Finish by screwing in the 7mm bolt.
At the widest point the splash guards add about an additional inch of protection. A must for people who live in a place like Utah!