Ok I installed my VKPRO last week and and In that time my SES light came on twice, both times it was blinking and I hooked my truck up to Uprevs Chiper software and it said the codes where P0300 and P0335. I am going to the dealer soon to see what they mean but I was wondering if anyone already knew what these codes mean or if anyone else as had these problems. If its the VKPRO causing this I will just send it back, not worth it to me. btw the first light came on the afternoon i installed it and the second light came on about an hour ago on my way home, both lights only stayed on about 15 seconds. thanks again guys.