Nearly a decade after its original introduction, the second-generation GMC Acadia has arrived with a new platform. It is shorter and lighter than the old model, and should be more fuel efficient. The ride is steady and composed and handling is responsive. A new 2.5-liter four-cylinder engine is standard, while the mainstream engine is a smooth 3.6-liter V6. This family-friendly, three-row SUV comes in five-, six-, or seven-passenger seating configurations. The cabin is very quiet, the front seats are comfortable, and the infotainment system is easy to use. The outboard second-row seats can slide and tilt forward, even with a child seat in place. A bevy of safety features are available, including forward-collision warning with automatic braking, pedestrian detection, lane warning, and blind-spot monitoring.