Few questions --
1. What is impact on GM new car and extended warranties?
2. Does the light set up meet state and federal standards - especially if you do not change the light housings? (Virginia inspection includes a headlight measurement check as well as verification that lights are DOT approved).
3. How would an HID upgrade impact the intelli-beam feature?
I'm in florida but,
1. Warranty policies change. I don't know about a manufacturer that would take it away from changing a light bulb. I had a lemon once and they had to buy the vehicle back from me, including the lights I put on it. I do see some manufacturers like KIA talking about putting hid conversion kits on their vehicle's owners manuals and warning them about possible radio malfunctions. ( HIDs are not standard, you need a qualified or overqualified kit designed to work with your vehicle and definitely avoid knockoff kits you would find anywhere on ebay for $28.95 etc, same thing avoid kits that are not designed for your particular vehicle.
2. The headlamps needs to be DOT, which they are. hid conversion are illegal and what really makes them illegal is the color option the person picks. In the past few years, most people would buy really crazy colors like pink, purple or the darkest blue they could find, of course this is going to get you the wrong kind of attention on the road. We always suggest 4300k to 6000K, note our 6k is like 10k in the knockoff kits because they are barely putting down any power ( they claim 35W), maybe 15w at the most. Factory hid or true hid is 35W and the beam of the hid bulb must be a corrected one in order to give the right cutoff line and the most light output. You know it's right when the cutoff line is sharper that what it used to be, high quality hids would achieve this.
3. It will not affect it, intellibeam only activates the high beams when there is no presence of tail lights of vehicles ahead of you or headlights from oncoming vehicles.
I hope that helps!