Is anyone else having problems with their trunk lid opening by itself? on 2008 Cadillac DTS

We have had numerous instances where my wife has gone into a store, to church, etc. and came out to the car and the trunk lid was open.
The car has been taken to the dealership 3 or 4 times about the problem and it still opens by itself.

Asked by for the 2008 Cadillac DTS
there are no tsb's on this issue, maybe your key fob is bad or you are sitting on it at times. try a diff key fob you should have gotten 2 with the car
1 more answer
I have a 2007 DTS with 53000 miles on it. I had gone out of town and put the car in the garage. My girlfriend came over a few days later and found the trunk open when she went into the garage. I did not leave it open when i departed.
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