I've tried a number of different things, and I can't get the red lights on the bumper to go on no matter what I do. The Chevrolet salesperson also didn't know what these are for. There are three different lights on each side of the bumper, and I've determined what will cause the other two lights to go on (turn signals, reverse, vehicle locator if enabled, possibly vehicle exit if enabled, remote unlock/lock, possibly other things), but nothing I've done causes the red lights to turn on. Maybe it is just a reflector?