I am new to the forum, I am not sure if this has been covered. I have a 2013 supercab Lariat with the V8. This winter I have notice period rubbing or maybe grinding noise from under neath the truck I notice this when starting out usually when the truck is cold. However, a few times I have noticed this pulling into a parking lot etc after driving the truck a while. I brought it to the dealer and told them to check the truck first thing in the morning. They did not find anything. They said I had to wait until it happened all the time. The nosie does not sound right or good at all. ANyone have any experience with a similar noise or sound. Any suggestions?