You don’t have time for surprises, so GuardDog® Connect provides 24/7 proactive monitoring of your truck. When it detects a problem, a OneCall® agent connects you with our coast-to-coast dealer and repair network to quickly get you back on the road. And our fleet management tools further enhance operational performance, reduce cost and increase safety. Because with Mack, it’s always all systems go. MackTrucks.com