I have a week old gc Laredo that has a plastic vibration /rattle noise under steering wheel /dash area that appears at low spead acceleration ,around 15-20 mph. Last for a few seconds then goes away ,,(very annoying). I brought it back to jeep ,and they said there's nothing wrong could not find noise! I have a feeling this is going to be a very frustrating problem to try ands resolve. I read a post on here about a similar noise, but seemed to be more of a metal rattle noise in same location and ended up being a metal wire harness, does any one here have a similar noise ,and or advise or solution.... I need help....