Find Aftermarket Grille Guards for the Mack CV/GU. It's easy to boost your Mack CV/GU truck s style and functionality with corrosion-resistant, good-looking grille guards. Made from heavy-duty aluminum or stainless steel, they re built to last and resist corrosion. Choose from 2-post or 4-post designs to match your rig s rugged vibe. Add strength, style, and confidence with a premium grille guard!