I picked up my set of "splash guards" from the local GM dealership. Cost was about $230 for all four . If you have the right tools, removing the tires would not be necessary. Total time was about 20 minutes for each fender. Not sure how effective they will be in deflecting road debris from the body panels, but any little bit helps. A better alternative would be to have Expel paint protective film installed on those key areas subject to road debris.
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