Has anyone else recieved an invitation via email to complete a survey about their 3500 4x4? Most of the questions seem to be centered around the four wheel drive system and specifically the high-low functionality. They ask a lot of questions about how you use your four wheel drive system, do you use the low range, how do you use the low range, and would you buy a 3500 4X4 without a low range. For me, the low range is a must have and I told them that. If the low range went away, so would my business.