Thanks for the info, I'll have to tell the dealership about this one.
Have had the car for about 2 months. The rear lights had to be replaced before I even drove it and it seems those cushion's are in the same location as the light casings.
The non-stop almost random knocking from the tailgate is slowly driving me nuts. The dealership found the noise did something and it went away ..... for like a day.
Have another appointment for them to look at it again and this time take the car away for the day to drive it and figure it out. I will ask them to check those tailgate cushions even though I'm pretty sure they'll blow me off.
UGH! Have driven the car for a little over two months and been in the shop 4 times already.
Slightly depressed about it, was loving the car before all of this, sure hope your solution works