I have a 15 Sierra 2500 SLE. Purchased a set of HID's from opt7. Worked great for a couple days. Now I'm having a problem when the truck is cold. I turn it on and only the passenger side wants to turn on. I turn the lights off with the knob and then back on again 5 or 6 times and then they will usually both work. I tried contacting OPT7 and they were at a loss. They sent me 2 new ballast still the same problem. I tried it with the canbus thing and without. Still the same problem. Currently I'm running the relay to the ballast to the bulb. This is their 35w slim line ballast system. I tried moving the ground wire to a different spot and that didn't work either. The problem happens both with DRL's and/or when the low beam comes on at night. Any help would be greatly appreciated