My aunt has a 2009 GMC Acadia SLT equipped with the power liftgate. She has had problems with it since day one. Sometimes it opens, sometimes it doesn't. The other day, it wouldn't close. When you shut the vehicle off and let it sit for a while it will work again. The dealer has tried to fix it, or when you take it to the dealer it works fine.
When you try to open it sometimes, you can hear the motor working and it actually "thumps" trying to open it and you can slightly see it push out, but then it gives up and you have to try to reopen it again. Other times it works fine.
Has anyone else experienced this issue, or does GM have a bulletin on it?
Any help of comments are appreciated.