These HID's marginally improved the lighting on the Acadia. GM has a very poor design on the projectors and I'll admit that my wife is right about the OEM lighting being poor. But the projector design also limits the HID's from much improvement too. But these cheap kits are a waste of my time. An H11 Silverstar Ultra may improve the **** poor lighting somewhat but this is my wife's company car. If I owned it I'd trade it in .......the truck is a POS too.