2017 Yukon Denali Center console/under cup holder rattle

[Ed Carfagnini]

Anyone have any ideas?  The sounds is so loud  it is heard over the radio but when I push in the side area where my right foot rest on the well the rattle will stop.  I have jammed hockey pucks into the small shelf on both sides and now the shelf is just popping off at the bottom.  I've taken it to my dealer now 4 times and nothing, I will sell the car before driving with this rattle for another summer.