Rostra's Rear Obstacle Sensing System is a popular $399 aftermarket addition to vehicles, greatly increasing safety when backing up. New quick-connect kits, which make the ROSS installation an easy 25-minute DIY project, are available for all mid- and full-size SUVs with a seven-wire trailer hitch, including the Avalanche, Suburban, Tahoe, Yukon, TrailBlazer, Envoy, Durango, Explorer, and Expedition. Rostra; 800/782-3379.
www.rostra.com