I had a Xentec hid kit on my tahoe and had alot of problems with them. I have heard many people have problems with Xentec. I just got a new set of hids that I got from Sonic Electronix. They are the Race Sport HID kit. Haven't heard much about them but they are $ 65.00 so I figured I would give them a try. Haven't installed them yet because I am waiting on the new headlight housings to get here.